Vibrating device, jet flow generating device, electronic device, and manufacturing method of vibrating device

TECHNICAL FIELD

0001The present invention relates to a vibrating device for causing vibrations in a jet flow of gas, a jet flow generating device in which the vibrating device is implemented, an electronic device in which the jet flow generating device is implemented, and a method for manufacturing the vibrating device.

BACKGROUND ART

0002There has been known a problem relating to increase in the amount of heat generated from heat sources in PCs (personal computers) such as ICs (Integrated Circuit), owing to the increase in performance of PCs. A known method for dissipating the heat involves bringing the IC in contact with radiating fins formed of a metal such as aluminum or the like, for example, so as to dissipate the heat from the IC by head conduction though the radiating fins. There is also a method known wherein a fan is used to forcibly displace warmed air within the PC housing and introduce the cooler ambient air, thereby dissipating heat. There is further a method known wherein both the radiating fins and fan are used together, whereby the area of contact between the heat source and the air is increased by way of the radiating fins, and the warmed air around the radiating fins is forcibly displaced by the fan.

0003However, with such forced convention of air with a fan, a thermal boundary layer occurs at the surface of the radiating fins on the downstream side, meaning there is a problem that heat cannot be efficiently conducted away from the radiating fins. One way to deal with this problem is to increase the airflow speed from the fan for example, so as to reduce the thickness of the thermal boundary layer. However, increasing the number of revolutions in order to increase the airflow speed leads to problems of noise from the fan bearings, noise due to wind roar, and so forth.

0004On the other hand, there is known a method wherein instead of a fan serving as a blower, a vibrating plate is used which cyclically performs reciprocal actions to disrupt the thermal boundary layer and efficiently release the heat from the radiating fins into the ambient atmosphere (e.g., see Patent Documents 1, 2, 3, 4). Of these, the devices in Patent Documents 3 and 4 in particular have a vibrating plate which generally divides a chamber into two spatially, an elastic member provided in the chamber so as to support the vibrating plate, and means for vibrating the vibrating plate. With such a device, when the vibrating plate is displaced upwards for example, the volume of the upper space in the chamber is reduced, so the pressure in the upper space rises. The upper space communicates with the ambient atmosphere via a vent, and accordingly a part of the air within the upper space is externally discharged. On the other hand, the volume of the lower space on the other side of the vibrating plate from the upper space increases, so the pressure in the lower space conversely drops. The lower space communicates with the ambient atmosphere via a vent, and accordingly a part of the air in the ambient atmosphere near the vent is drawn into the lower space due to the drop in pressure. Alternately, when the vibrating plate is displaced downwards for example, the volume of the upper space in the chamber increases, so the pressure in the upper space conversely drops. The upper space communicates with the ambient atmosphere via the vent, and accordingly a part of the air in the ambient atmosphere near the vent is drawn into the lower space due to the drop in pressure. The volume of the lower space on the other side of the vibrating plate from the upper space is reduced, so the pressure in the lower space rises. The lower space communicates with the ambient atmosphere via the vent, and accordingly a part of the air within the upper space is externally discharged. Driving of the vibrating plate is performed by electromagnetic driving, for example. Such reciprocal action of the vibrating plate cyclically repeats the action of the air within the chamber being discharged into the ambient atmosphere, and the action of air from the ambient atmosphere being sucked into the chamber. Blowing a pulsating flow of air inducted by such cyclical reciprocal actions of the vibrating plate on heat sources such as the radiating fins (heat sink) effectively disrupts the thermal boundary layer at the surface of the radiating fins, and consequently the radiating fins are effectively cooled. <ul id="ul0001" list-style="none"><li id="ul0001-0001" num="0005">Patent Document 1 Japanese Unexamined Patent Application Publication No. 2000-223871 (FIG. 2)</li><li id="ul0001-0002" num="0006">Patent Document 2 Japanese Unexamined Patent Application Publication No. 2000-114760 (FIG. 1)</li><li id="ul0001-0003" num="0007">Patent Document 3 Japanese Unexamined Patent Application Publication No. 2-213200 (FIGS. 1 and 3)</li><li id="ul0001-0004" num="0008">Patent Document 4 Japanese Unexamined Patent Application Publication No. 3-116961 (FIGS. 3 and 8)</li></ul>

DISCLOSURE OF INVENTION

0009However, in the event that the amount of heat generated from the heat source is great, a device with even higher cooling capabilities, i.e., capable of blowing greater amounts of gas. Particularly, the amount of heat generated by CPUs (Central Processing Unit) is increasing yearly, and CPUs need to be efficiently cooled. On the other hand, while the amount of gas blown by the device can be increased by increasing the amplitude of the vibrating plate, this not only generates flexing of the vibrating plate such that the gas cannot be effectively vibrated, but also can be the source of excessive noise.

0010In light of the above situation, it is an object of the present invention to provide a vibrating device wherein effective vibrations are generated in a vibrating member, whereby vibrations can be provided to gas in an effective manner, a jet flow generating device including the vibrating device, and an electronic device including the jet flow generating device.

0011It is another object of the present invention to provide a vibrating device, a jet flow generating device, and so forth, wherein reduction in thickness or reduction in size can be realized.

0012In order to achieve the above objects, a vibrating device according to the present invention is a vibrating device configured to vibrate gas included in a housing so as to discharge the gas via an opening included in the housing as a pulsating flow, comprising: a frame; a vibrating member including a vibrating plate having a face generally perpendicular to a vibrating direction, supported by the frame so as to be vibrated; and a driving unit configured to drive the vibrating member.

0013As for the driving method of the driving unit, electromagnetic operations, piezoelectric operations, or electrostatic operations, for example, can be used.

0014An example of the gas is air, but the gas is not restricted to this, and may be nitrogen, helium gas, argon gas, or other gasses.

0015With the present invention, the vibrating member includes a side plate provided on the vibrating plate. Accordingly, the rigidity of the vibrating member increases, and flexion of the vibrating plate can be controlled to efficiently apply vibrations to the gas. Also, the rigidity is achieved not be making the vibrating plate itself highly rigid by forming a side plate, thereby achieving overall high rigidity, and accordingly the weight of the vibrating member is not heavy.

0016The side plate may be provided generally perpendicular to the face of the vibrating plate as described later, but does not need to be perpendicular. The side plate just should be provided continuously or intermittently in contact with the vibrating plate, for example. That is to say, in an intermittent case, multiple side plates are provided. The side plate can be provided at the perimeter of the vibrating plate, or closer inwards therefrom.

0017With the present invention, the vibrating member includes a hole in the side plate. Accordingly, the weight of the vibrating member can be reduced while maintaining the rigidity of the vibrating member. Thus, reduction in electric power consumption can be achieved.

0018With the present invention, the vibrating member includes a rib member connected to between the vibrating plate and the side plate. Thus, the rigidity of the vibrating member can be increased.

0019With the present invention, the vibrating member includes a hole in the rib member. Accordingly, the weight of the vibrating member can be reduced while maintaining the rigidity of the vibrating member.

0020With the present invention, the vibrating member is made up of a resin, paper, or metal. Particularly, forming the vibrating member of paper realizes marked reduction in weight. Even if the weight is reduced, the vibrating member has the side plate and is rigid, so there is no problem.

0021With the present invention, the face is made up of a circle, an ellipse, a polygon, or an angle round shape, for example. An angle round shape is a shape of a region defined by straight lines and curves, an example being a polygon with rounded corners.

0022With the present invention, the side plate is installed upright at one side in the vibrating direction of the vibrating plate; and the driving unit includes an actuator configured to vibrate the vibrating member, which is disposed at the one side. Thus, the actuator is disposed so as to be surrounded by the vibrating plate, so the vibrating device can be reduced in thickness.

0023With the present invention, the vibrating plate is made up of a cone shape of which the diameter spreads gradually towards one side of the vibrating direction of the vibrating plate; and the driving unit includes an actuator configured to vibrate the vibrating member, which is disposed at the one side. Thus, the actuator is placed on the inner side of the cone shape, so the thickness of the vibrating device can be reduced. In this case, the vibrating including a side plate which is installed upright towards the opposite side of the one side contributes to reduction in thickness of the vibrating device as compared to being erected on the one side.

0024With the present invention, the frame supports the side plate in a slidable manner. Thus, the presence of the side plane enables the frame to be configured as if it were a cylinder, and the vibrating member a piston. Also, having the side plate in sliding contact with the frame suppresses sideways rocking of the vibrating member and so forth, thereby enabling stable vibrations. For example, surface finishing can be applied to the contact portions of the frame and side plate, so as to enable sliding.

0025With the present invention, the frame supports the side plate in a slidable manner using a gap provided between the frame and the side plate, or a lubricating agent. Thus, the vibrating member can vibrate smoothly.

0026With the present invention, the vibrating member comprises: an edge portion of the vibrating plate supported by the frame in a slidable manner; and a protruding portion protruding from the side plate, supported by the frame in a slidable manner. Thus, friction resistance can be reduced as compared with a case wherein the entire side plate is in contact with the frame, thereby reducing electric power consumption, and also suppressing noise.

0027With the present invention, the vibrating device further comprises: a first elastic supporting member configured to support the vibrating member, which is disposed between the frame and the side plate so as not to circulate the gas from one side of the vibrating direction of the vibrating plate to the opposite side thereof; and a second elastic supporting member configured to support the vibrating member, which is disposed between the frame and the side plate so as to be arrayed in a line with the first elastic supporting member generally in the vibrating direction. Having the side wall thus supported by first and second elastic supporting members thus arrayed in the direction of vibration prevents side rocking of the vibrating member and allows stable vibrations to be obtained. The second elastic supporting member may or may not have functions to prevent gas from flowing from one side of the vibration direction of the vibrating plate to the opposite side thereof.

0028Particularly, it is sufficient for the side plate to comprise: a first end portion to which the first elastic supporting member is connected; and a second end portion to which the second elastic supporting member is connected, which is provided at the opposite side of the first end portion in the vibrating direction. That is to say, if the distance between the first and second elastic supporting members is made to be as great as possible, more stable vibrations can be obtained.

0029With the present invention, the second elastic supporting member is made up of a plurality of plate springs. Or a plurality of wires. Configuring the second elastic supporting member with such relatively slender members enables resistance to the intended reciprocal action in the vibration direction to be reduced, while preventing side rocking of the vibrating member.

0030With the present invention, the first and second elastic supporting members are made up of the same material. The first and second elastic supporting members may be of not only the same material, but of approximately the same shape.

0031With the present invention, the vibrating device further comprises: a bellows-shaped first elastic supporting member configured to support the vibrating member, which is disposed between the frame and the vibrating member so as not to circulate the gas from one side of the vibrating direction of the vibrating plate to the opposite side thereof. The bellows-shaped elastic supporting member may have a plurality each of peak portions and trough portions.

0032With the present invention, the vibrating member includes a side plate to which the first elastic supporting member is connected, which is provided in the vibrating plate; and wherein the vibrating device further comprises a bellows-shaped second elastic supporting member configured to support the vibrating member, which is disposed between the frame and the vibrating member so as to be arrayed in a line with the first elastic supporting member in the vibrating direction, and also so as to become a generally symmetrical shape in the vibrating direction of the vibrating member. Particularly, in the event that the elastic supporting members are bellows-shaped, and the peak portions and peak portions of the elastic supporting members face one another, and the trough portions and the trough portions face one another, i.e., are not symmetrically shaped, the amplitude of both sides of the vibrating member as viewed from a neutral point differ, and efficient vibrations might not be obtained. That is to say, disposing the elastic supporting members in a symmetrical shape means that the amplitude of both sides of the vibrating member as viewed from a neutral point when the vibrating member is not vibrating is the same, whereby efficient vibrations can be obtained.

0033With the present invention, the first elastic supporting member comprises: one trough portion disposed at the vibrating member side; and one peak portion disposed at the frame side; and wherein the driving unit includes an actuator configured to vibrate the vibrating member, and a feeder line connected to the actuator so as to pass through the air near the first elastic supporting member. The first elastic supporting member has smaller amplitude at the frame side which is the outer side, and greater amplitude at the vibrating member side which is the inner side. Accordingly, placement of the trough portion at the vibrating member side with amplitude is great widens the space where the feeder line moves along with vibrations, i.e., degree of freedom of movement of the feeder line improves, and line breakage can be prevented.

0034With the present invention, the area of the face of the vibrating plate is not greater than 70% of the area of a portion surrounded by places where the first elastic supporting member is in contact with the frame, which is a portion within a face generally in parallel with the face of the vibrating plate. In the event that this exceeds 70%, resistance of vibrations of the vibrating member increases, and noise may increase. Preferably, 60% or lower is desirable.

0035With the present invention, the vibrating member is made up of the same material as the vibrating plate, and includes an elastic supporting portion configured to support the vibrating plate by being implemented in the frame, which is the circumference of the vibrating plate. Integrally molding the elastic supporting member with the vibrating member facilitates manufacturing of the vibrating member.

0036With the present invention, the driving unit comprises: a magnet; a bobbin including an air communication opening configured to circulate the gas, which is mounted on the vibrating member, and also is provided so as to surround the magnet; and a coil wound on the bobbin. That is to say, the driving unit has a voice coil. With the present invention, the volume of space between the bobbin and magnet changes by the bobbin moving. In the event that the bobbin has no air communication opening, the pressure change of the space within the bobbin becomes vibration resistance. However, according to the present invention, the gas within the inner space escapes to the outer side of the bobbin via the air communication opening, so efficient vibration can be realized.

0037With the present invention, the vibrating plate includes a hole portion generally at the center thereof, which penetrates in the vibrating direction; and wherein the driving unit includes a coil implemented in the hole portion, a plate-shaped yoke disposed around the hole portion so as to surround the coil, and at least two magnets provided so as to sandwich the yoke. According to such a configuration, a relatively large magnet can be used. Accordingly, the magnetic force can be increase, and larger vibrations can be obtained. Taking into consideration the effects thereof, the vibrating plate may have a hole portion penetrating in the vibration direction at approximately the center thereof, and the driving unit may include a coil mounted in said hole portion, a plate-shaped yoke disposed nearby the hole so as to be surrounded by the coil, and at least two magnets provided so as to sandwich the yoke.

0038With the present invention, the driving unit includes an actuator having a magnet of which residual magnetic flux density is 0.3 through 3.0 T. The reason while 0.3 T or greater is stated is to obtain a desire magnetic flux density even in cases wherein the vibrating device is reduced in size, and the magnet is also reduced in size, for example. Also, this is because 3.0 T or higher is expensive. For example, the magnet is a neodymium magnet.

0039With the present invention, the driving unit includes a terminal block mounted on the frame, an actuator employing electromagnetic drive which includes a coil, and a feeder line connected to between the terminal block and the coil. Due to the frame having a terminal block, line breakage is prevented, and also wiring is facilitated at the time of manufacturing the jet flow generating device in which to include the vibrating device.

0040With the present invention, the minimum bending radius of the feeder line is generally five times of the thickness of the feeder line. Thus, line breakage of the feeder line due to vibrations of the vibrating member can be prevented. In the event that this is smaller than five times, stress is concentrated at the bending portion, and line breakage readily occurs. “Minimum bending radius” is the bending radius of the portion of the feeder line where the bending radius is the smallest.

0041With the present invention, the feeder line is subjected to braiding. Thus, line breakage can be prevented. For such feeder lines, robot cables or the like, for example, are used.

0042With the present invention, the actuator is disposed at one side in the vibrating direction of the vibrating plate, and the feeder line extends at the opposite side of the one side of the vibrating plate. In the case of a feeder line having a bending radius as described above, wiring as with the present invention enables wiring with a gentle curve. Also, only chamber space is on the other side of the actuator, yielding the advantage that wiring is easy.

0043With the present invention, the vibrating member includes a side plate having a through hole; and the vibrating device further includes a first elastic supporting member configured to support the vibrating member, which is disposed between the frame and the side plate so as not to circulate the gas from one side of the vibrating direction of the vibrating plate to the opposite side thereof, and a second elastic supporting member configured to support the vibrating member, which is disposed between the frame and the side plate so as to be arrayed in a line with the first elastic supporting member generally in the vibrating direction; wherein the feeder line is disposed so as to be inserted into the through hole, and also so as to be passed through between the first and second elastic supporting members. Thus, reduction in thickness can be realized.

0044With the present invention, the thickness of the feeder line is not less than 0.4 mm. Thus, line breakage can be prevented. While there is no upper limit in the thickness of the feeder line from the perspective of preventing line breakage, this is a sensible range corresponding to the size of the vibrating device. For example, this is an upper limit of 3 mm or less, or 5 mm or less.

0045With the present invention, the cross section perpendicular to the longitudinal direction of the feeder line is a flat shape. Performing appropriate wiring taking into consideration the airflow within the chamber generated by the vibrating member, turbulence due to the presence of the feeder line can be prevented, and noise due to wind roar can be suppressed.

0046With the present invention, the driving unit includes a terminal block mounted on the frame, and an actuator employing electromagnetic drive, which includes a coil; wherein the vibrating member includes a side plate provided on the vibrating plate; and wherein the driving device further includes an elastic supporting member configured to support the vibrating member, which is made up of a conductive material capable of supplying power to the actuator, and is disposed between the frame and the side plate. Thus, manufacturing can be performed using as little feeder line as possible, doing away with the concern of line breakage.

0047With the present invention, the frame includes an air communication opening configured to circulate the gas. Thus, a suitable airflow due to vibrations of the vibrating member can be generated from the inner side to the outer side of the frame.

0048With the present invention, the vibrating member is a cylindrical shape including a first and second vibrating plates connected to both ends in the vibrating direction of the side plate; and the driving unit includes an actuator configured to vibrate the vibrating member in the inside of the cylindrical-shaped vibrating member. For example, with an arrangement wherein the actuator is attached to a portion where the vibrating device is fixed to the housing of the jet flow generating device to which it is mounted, the only thing outside the vibrating member is chamber space. Accordingly, gas within the housing on the outer side of the vibrating member can be smoothly and efficiently jettisoned to the outer side of the housing. Also, noise can be reduced in conjunction with this. Alternatively, the driving unit includes an actuator configured to vibrate the vibrating member; and the vibrating member includes a first vibrating plate connected to the actuator, and a second vibrating plate configured to vibrate in sync with the first vibrating plate due to change in pressure of the gas to be generated when the first vibrating plate vibrates by the actuator being driven, which is arrayed with the first vibrating plate generally in the vibrating direction.

0049With the present invention, the driving unit includes an actuator employing electromagnetic drive, which includes a coil; and at least part of the frame is made up of a magnetic substance configured to make up the magnetic circuit of the actuator. Accordingly, at least one part of the frame also serves to function as a magnetic circuit, whereby magnetic flux density can be increased.

0050With the present invention, the vibrating device further comprises an elastic supporting member configured to support the vibrating member; wherein the frame has a plate-shaped appearance within the face, on which the elastic supporting member is mounted. Providing such a thin frame realizes reduction in thickness of the vibrating device and jet flow generating device. “Plate-shaped appearance” includes a shape wherein the frame is of a flat plate shape, with holes, grooves, etc., being provided to the flat plate whereby the vibrating member is to be attached.

0051With the present invention, the housing is made up of a resin; and the frame is made up of a material of which the rigidity is higher than the housing. Thus, even in the event that the thickness of the frame is less than the thickness of the housing, necessary rigidity can be maintained. Particularly, in the event that the frame is formed of metal, sufficient rigidity can be maintained.

0052With the present invention, the vibrating device further comprises an elastic supporting member configured to support the vibrating member so as to be vibrated, which is implemented in the housing, and also is formed so as to cover the frame. The elastic supporting member and frame can be formed by integral molding. Integral molding not only reduces the manufacturing processes as a matter of course, but also markedly improves positional precision between the elastic supporting member and the frame, and accordingly the positional precision of the positional precision of the elastic supporting member and housing.

0053With the present invention, the vibrating device further comprises an elastic supporting member configured to support the vibrating member so as to be vibrated, which is mounted to the frame, and also is formed so as to cover the vibrating member. The vibrating member and the elastic supporting member can be formed by integral molding. Integral molding not only reduces the manufacturing processes as a matter of course, but also markedly improves positional precision between the elastic supporting member and the vibrating member. In this case, the elastic supporting member may be formed so as to cover the frame.

0054With the present invention, the driving unit includes an electric wire of which the cross section generally perpendicular to the longitudinal direction is a polygon, and an actuator employing electromagnetic drive, which includes a coil configured by the electric wire being wound. Thus, the density of the coil per unit cross-sectional area can be increased over a case of wire having a circular cross-section perpendicular to the longitudinal direction. That is to say, a greater number of winds can be made of the wire for the same volume. Accordingly, the height of winds (thickness of the entire coil) is reduced for the same number of winds, so reduced thickness of the coil can be achieved. A “polygon” is a shape having three or more angles.

0055With the present invention, the coil is configured by an even number of layers being wound. This is advantageous in the event that the winding start of the coil and the winding end are to be at the same side. That is to say, in this case, in the case of an odd number of layers, the thickness of one coil worth (thickness of one layer worth) is wasted, but with even layers, the waste of that space is done away with, contributing to reduced size and reduced thickness.

0056With the present invention, the driving unit includes a magnet implemented in the vibrating member, and a coil configured to vibrate the vibrating member in which the magnet is implemented by generating a magnetic field upon application of electricity. Accordingly, reduction in thickness of the vibrating device, and consequently the jet flow generating device, can be realized.

0057With the present invention, the coil is disposed outside the housing. Having the coil disposed outside the housing enables the amplitude of the vibrating member to be increased without interference between the vibrating member and the coil. Accordingly, the amount of gas discharged can be increased. Also, the resistance of airflow generated within the housing is reduced, and noise is suppressed. The coil may be mounted within the housing, or may not be mounted therein.

0058With the present invention, the driving unit includes a power source configured to apply power for rotating the vibrating member within the face, and a transformation mechanism configured to transform the movement of the vibrating member which rotates by the power source so as to vibrate the vibrating member in the vibrating direction. The power source includes a coil, and a magnet implemented in the vibrating member. In this case, as described above, the coil may be disposed outside of the housing. The transformation mechanism is made up of a rack mechanism or cam mechanism, but may be another mechanism.

0059With the present invention, the vibrating member is a bimorph-type piezoelectric actuator. Thus, a thin piezoelectric actuator can be realized.

0060With the present invention, the vibrating member includes an end portion within the face; and the driving unit includes a coil mounted on the end portion of the vibrating member, and a plurality of magnetic circuit configuration members configured to make up a magnetic circuit configured to apply driving force to the coil. If there is a magnetic circuit configuring member at the perimeter of the coil, reduction of thickness can be realized. For example, the magnetic circuit configuration member includes a first yoke including a first wall around which the coil is disposed, and a second wall facing the first wall, which is installed upright in the vibrating direction, a plate-shaped second yoke disposed between the first wall and the second wall so as to face both of the first and second walls, and a magnet magnetized in a direction from the first wall toward the second yoke, which is sandwiched between the first wall and the second yoke.

0061A vibrating device according to another perspective of the present invention is a vibrating device configured to vibrate gas included in a housing so as to discharge the gas via an opening included in the housing as a pulsating flow, comprising: a frame; a vibrating member including a vibrating plate having a face generally perpendicular to a vibrating direction, supported by the frame so as to be vibrated; and a driving unit including a magnet, a bobbin including an air communication opening configured to circulate the gas, which is mounted on the vibrating member, and also is provided so as to surround the magnet, and a coil wound on the bobbin.

0062According to the present invention, gas within the inner space can escape outwards from the bobbin via the air communication opening, so pressure change of the space within the bobbin does not become vibration resistance, and effective vibrations can be generated at the vibrating member.

0063A jet flow generating device according to the present invention comprises: a frame; a vibrating member including a vibrating plate having a face generally perpendicular to a vibrating direction, supported by the frame so as to be vibrated; a housing including an opening, configured to support the frame, and also in which gas is included; and a driving unit configured to discharge the gas via the opening as a pulsating flow by driving the vibrating member to apply vibration to the gas. For example, if the vibrating member includes a side plate provided on the vibrating plate, rigidity of the vibrating member increases, flexion of the vibrating plate is suppressed, and the gas can be effectively provided with vibrations.

0064With the present invention, the housing includes at least the two openings, and also includes at least two chambers therein, which are provided at one side in the vibrating direction of the vibrating plate, and at the opposite side thereof so as to each communicate with each of the openings. Accordingly, gas is alternately discharged from the openings, so the sounds of discharge from the openings are of inverse phase and weaken each other, so noise can be suppressed. In the event that the volume of the at least two chambers are the same, the symmetry of the device in the vibration direction increases, so reduction of noise can be further improved. However, the two chambers do not necessarily have to be the same.

0065With the jet flow generating device, in the event that there is no frame, the jet flow generating device comprises: a vibrating member including a vibrating plate having a face generally perpendicular to a vibrating direction; a housing including an opening, configured to support the vibrating member is as to be vibrated, and also in which gas is included; and a driving unit configured to discharge the gas via the opening as a pulsating flow by driving the vibrating member to apply vibration to the gas. That is to say, with the present invention, the frame itself is configured of the housing.

0066With the present invention, the driving unit includes an actuator employing electromagnetic drive, which includes a coil, and at least a part of the housing is formed of a magnetic substance for configuring a magnetic circuit of the actuator. Accordingly, at least a part of the housing can also function as a magnetic circuit, whereby the magnetic flux density can be improved.

0067With the present invention, the jet flow generating device further comprises a nozzle member including the conduit of the gas to be communicated to the opening, mounted on the housing. Thus, the nozzle member is mounted to the housing after the housing is manufactured, whereby manufacturing of the jet flow generating device is facilitated.

0068With the present invention, the driving unit includes an actuator employing electromagnetic drive, and a circuit board configured to generate an electric signal arranged to operate the actuator, which is attached to the housing. Accordingly, not only are intermediate electrical connecting means such as a terminal block rendered unnecessary, the structure is also simplified.

0069With the present invention, the housing includes a face having a different angle from the face, and the circuit board is attached to the face having a different angle. Accordingly, this contributes to reduction in thickness of the jet flow generating device.

0070With the present invention, the circuit board makes up part of the housing. Accordingly, this contributes to reduction in size of the jet flow generating device.

0071With the present invention, the housing includes first and second chambers which are separated by the vibrating member in the vibrating direction of the vibrating member within the housing, in which the gas is included, and a plate made up of a magnetic substance, which is disposed at least at one side of the first and second chambers. Thus, in a case wherein the driving unit is an electromagnetic motor for example, and the vibrating member is within the housing, magnetic field leakage can be suppressed by the metal plate thereof. In this case, one having high magnetic permeability is preferably used, in order to manifest the magnetic shielding effects. For example, by the plate being made up of metal, the housing can be made thinner since the strength thereof is greater than that of resin or the like.

0072With the present invention, the housing includes an opening for work, and a lid mounted on the opening for work. “Work” means testing, inspection, manufacturing work, and so forth, during the manufacturing process of the jet flow generating device. In this case, the housing is partially from of a material which transmits visible light, instead of a lid. Or, the lid may be formed of a material which transmits visible light.

0073With the present invention, the jet flow generating device further comprises a fixing mechanism configured to fix the jet flow generating device to an electronic device. This facilitates work of assembling the jet flow generating device into an electronic device by a worker.

0074With the present invention, the housing includes an outer face including a first face, a second face, a curved face configured to connect between the first face and the second face. Thus, waste of space can be eliminated in a case of the jet flow generating device being implemented in an electronic device.

0075With the present invention, the housing includes a plurality of the openings, a first opening having a first opening face of the openings, and a second opening having a second opening face of a different angle from the first opening face. Thus, jet flows are blown in different directions. For example, the positions of the first opening face and the second opening face can be designed so as to match the form of the electronic device. The first opening face and the second opening face may be disposed so as to be almost orthogonal to each other, or almost in parallel.

0076A jet flow generating device according to the another perspective of the present invention comprises: a plurality of vibrating members configured to be all vibrated generally in the same direction; a housing including a plurality of openings, and a plurality of chambers configured to each communicate to each of the openings, in which each of the vibrating members is disposed, which are disposed so as to be arrayed within a face generally perpendicular to the vibrating directions of the vibrating members, and each of which gas is included; a driving unit configured to discharge the gas via the each opening as a pulsating flow by driving the vibrating members to apply vibration to the gas.

0077With the present invention, vibrating members are provided for each of multiple chambers arrayed in planar fashion, and gas is discharged from each of openings communicating with the chambers, whereby not only can the jet flow generating device be reduced in thickness, but also the amount of gas discharged can be increased. Also, with an arrangement wherein the two vibrating members vibrate such that at the timing at which one vibrating member moves in one direction, the other moves in the opposite direction, there is moment generated at the device as a whole, but the vibrations of the two vibrating members are cancelled out. Accordingly, vibrations applied to the electronic device in which the jet flow generating device is implemented can be suppressed.

0078The “same direction” which is the direction of vibration in the present invention includes the meaning of both directions of the direction heading toward one side and the direction heading toward the other side. That is to say, this does not mean that the multiple vibrating members all have to vibrate upwards at the same timing, or have to vibrate downwards at the same timing. It is sufficient for the direction of the overall vibration of the vibrating members to be approximately the same, regardless of the vibrating timings.

0079With the present invention, the jet flow generating device further comprises: a nozzle member including a plurality of the gas conduits which communicate to the respective openings respectively, and forming the respective conduits integrally. Thus, sets are formed of one nozzle per one housing, thereby facilitating manufacturing.

0080With the present invention, the housing includes a hole into which a heat transport device is fitted, which is configured to transport heat based on the phase change of a working fluid using capillary action. Or, the housing includes a step, a groove, or a recessed portion with which the heat transport device is in contact. Accordingly, the position to which the heat transport device is to be attached to the jet flow generating device is readily discernible to a worker, facilitating manufacturing. Also, this contributes to reduction in size or reduction in thickness of the device obtained by combining the jet flow generating device and the heat transport device.

0081With the present invention, the driving unit includes an actuator employing electromagnetic drive, which includes a magnetic circuit configuration member making up a magnetic circuit; and the magnetic circuit configuration member is provided so as to protrude outside the housing in the vibrating direction from the housing. The size of the magnetic circuit configuration member is often large in comparison to other actuator parts, so other than the magnetic circuit configuration member is provided so as to protrude outside the housing. That is to say, this enables the housing to be made as small as possible, doing away with unnecessary space.

0082A jet flow generating device according to another perspective of the present invention comprises: a frame; a vibrating member including a vibrating plate having a face generally perpendicular to a vibrating direction, supported by the frame so as to be vibrated; and a housing including an opening, configured to support the frame, and also in which gas is included; and a driving unit configured to discharge the gas via the opening as a pulsating flow by driving the vibrating member to apply vibration to the gas, which includes a magnet, a bobbin including an air communication opening configured to circulate the gas, which is mounted on the vibrating member, and also is provided so as to surround the magnet, and a coil which is wound around the bobbin.

0083With the jet flow generating device according to the present invention, in the event that there is no frame, the jet flow generating device comprises: a vibrating member including a vibrating plate having a face generally perpendicular to a vibrating direction; a housing including an opening, configured to support the vibrating member so as to be vibrated, and also in which gas is included; and a driving unit configured to discharge the gas via the opening as a pulsating flow by driving the vibrating member to apply vibration to the gas, which includes a magnet, a bobbin including an air communication opening configured to circulate the gas, which is mounted on the vibrating member, and also is provided so as to surround the magnet, and a coil which is wound around the bobbin.

0084An electronic device according to the present invention comprises: a heat generating member; a jet flow generating device including a frame, a vibrating member including a vibrating plate having a face generally perpendicular to a vibrating direction, supported by the frame so as to be vibrated, a first housing including an opening, configured to support the frame, and also in which gas is included, a driving unit configured to discharge the gas toward the heat generating member via the opening as a pulsating flow by driving the vibrating member to apply vibration to the gas; and a second housing capable of holding the heat generating member and the jet flow generating device.

0085That the second housing is “capable of holding” the heat generating member and the jet flow generating device, does not necessarily mean that the heat generating member and the jet flow generating device have to be “stored”; this term includes permitting a part of the heat generating member or the like for example, to be exposed externally from the second housing.

0086Examples of heat generating members include electronic parts such as ICs or resistors, radiating fins (heat sink), etc., but are not restricted to these, and may be anything which generates heat.

0087With this electronic device, in the event that there is no frame, the electronic device comprises: a heat generating member; a vibrating member including a vibrating plate having a face generally perpendicular to a vibrating direction; a housing including an opening, configured to support the vibrating member so as to be vibrated, and also in which gas is included; and a driving unit configured to discharge the gas toward the heat generating member via the opening as a pulsating flow by driving the vibrating member to apply vibration to the gas.

0088As for the electronic device, examples of the electronic device include computers (in the case of a personal computer, this may be either a laptop or a desktop), PDAs (Personal Digital Assistance) electronic dictionaries, cameras, display devices, audio/visual equipment, projectors, cellular telephones, game devices, car navigation devices, robotic equipment, and other electric appliances and so forth. This holds true regarding the “electronic device” described below as well.

0089With the present invention, the electronic device further comprises a second housing for storing the heat generating member, wherein part of the second housing is made up of part of the first housing. Thus, reduction in size or reduction in thickness of the electronic device can be realized.

0090An electronic device according to another perspective of the present invention comprises: a first heat generating member; a first jet flow generator configured to discharge a first gas in a first direction towards the first heat generating member as a pulsating flow; a second heat generating member; and a second jet flow generator configured to discharge a second gas in a second direction, which differs from the first direction, towards the second heat generating member as a pulsating flow.

0091With the present invention, in the event that two or more heat generating members are disposed at distanced positions, the heat generating members can be efficiently cooled. Also, the first direction and the second direction are different, so following thermal discharge of the first and second heat generating members, gas including the heat can be vented in different directions.

0092The type of gas for the “first gas” and the “second gas” may be the same. However, these do not need to be the same, and may be different.

0093For example, the first direction and the second direction differ approximately 90 degrees. The first and the heat generating members may have the same configuration, and the first and the second jet flow generators may have the same configuration. “Configuration” here also includes the concept of shape and size. “Same configuration” means manufactured articles when articles substantially the same are manufactured, and does not mean that these are physically identical.

0094With the present invention, the length obtained by adding the length of the first heat generating member in the first direction, and the length of the first jet flow generator in the first direction is approximately equal to the length in the first direction of the second jet flow generator. In the event that the first direction and the second direction differ approximately 90 degrees, wasted space can be eliminated by such a configuration according to the present invention.

0095A manufacturing method according to the present invention is a manufacturing method of a vibrating device configured to vibrate gas included in a housing to discharge the gas via an opening included in the housing as a pulsating flow, comprising: a step arranged to dispose a frame to be attached to the housing in a predetermined position; and a step arranged to subject the frame disposed in a predetermined position, and an elastic supporting member configured to support a vibrating member configured to vibrate the gas to integral molding.

0096With the present invention, the frame and elastic supporting member are integrally molded, thereby reducing manufacturing processes, and also reducing costs. This also markedly improves positional precision between the elastic supporting member and frame, and consequently between the elastic supporting member and the housing.

0097The present invention further comprises a step arranged to the vibrating member and the elastic supporting member to integral molding. With the present invention as well, this reduces the manufacturing processes, reduces costs, and markedly improves positional precision between the vibrating member and elastic supporting member, and consequently between the elastic supporting member and the housing.

0098A manufacturing method of a vibrating device according to another perspective of the present invention is a manufacturing method of a vibrating device configured to vibrate gas included in a housing to discharge the gas via an opening included in the housing as a pulsating flow, the method comprising: a step arranged to dispose a vibrating member configured to vibrate the gas in a predetermined position; and a step arranged to subject the vibrating member disposed in a predetermined position, and an elastic supporting member configured to support the vibrating member to integral molding.

0099Thus, according to the present invention, efficient vibrations can be generated at the vibrating member, thereby effectively applying vibrations to the gas.

BRIEF DESCRIPTION OF THE DRAWINGS

0100<figref idref="DRAWINGS">FIG. 1</figref> is a perspective view illustrating a jet flow generating device according to an embodiment of the present invention.

0101<figref idref="DRAWINGS">FIG. 2</figref> is a cross-sectional view of the jet flow generating device shown in <figref idref="DRAWINGS">FIG. 1</figref>.

0102<figref idref="DRAWINGS">FIG. 3</figref> is a perspective view illustrating a vibrating member according to an embodiment of the present invention.

0103<figref idref="DRAWINGS">FIG. 4</figref> is an enlarged cross-sectional view illustrating an actuator <b>5</b> according to an embodiment of the present invention.

0104<figref idref="DRAWINGS">FIG. 5</figref> is a diagram illustrating a state of a magnetic field generated by the actuator shown in <figref idref="DRAWINGS">FIG. 4</figref>.

0105<figref idref="DRAWINGS">FIG. 6</figref> is a perspective view illustrating a vibrating member according to another embodiment of the present invention.

0106<figref idref="DRAWINGS">FIG. 7</figref> is a perspective view illustrating a vibrating member according to yet another embodiment of the present invention.

0107<figref idref="DRAWINGS">FIG. 8</figref> is a perspective view illustrating a vibrating member according to yet another embodiment of the present invention.

0108<figref idref="DRAWINGS">FIG. 9A</figref> is a plane view illustrating a vibrating plate according to yet another embodiment of the present invention.

0109<figref idref="DRAWINGS">FIG. 9B</figref> is a plane view illustrating a vibrating plate according to yet another embodiment of the present invention.

0110<figref idref="DRAWINGS">FIG. 9C</figref> is a plane view illustrating a vibrating plate according to yet another embodiment of the present invention.

0111<figref idref="DRAWINGS">FIG. 9D</figref> is a plane view illustrating a vibrating plate according to yet another embodiment of the present invention.

0112<figref idref="DRAWINGS">FIG. 9E</figref> is a plane view illustrating a vibrating plate according to yet another embodiment of the present invention.

0113<figref idref="DRAWINGS">FIG. 10</figref> is a cross-sectional view of a vibrating device according to another embodiment of the present invention.

0114<figref idref="DRAWINGS">FIG. 11</figref> is a perspective view of the vibrating device shown in <figref idref="DRAWINGS">FIG. 10</figref>.

0115<figref idref="DRAWINGS">FIG. 12</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0116<figref idref="DRAWINGS">FIG. 13</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0117<figref idref="DRAWINGS">FIG. 14</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0118<figref idref="DRAWINGS">FIG. 15</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0119<figref idref="DRAWINGS">FIG. 16</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0120<figref idref="DRAWINGS">FIG. 17</figref> is a cross-sectional view along line A-A in <figref idref="DRAWINGS">FIG. 16</figref>.

0121<figref idref="DRAWINGS">FIG. 18</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0122<figref idref="DRAWINGS">FIG. 19</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0123<figref idref="DRAWINGS">FIG. 20</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0124<figref idref="DRAWINGS">FIG. 21</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0125<figref idref="DRAWINGS">FIG. 22</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0126<figref idref="DRAWINGS">FIG. 23</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0127<figref idref="DRAWINGS">FIG. 24</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0128<figref idref="DRAWINGS">FIG. 25</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0129<figref idref="DRAWINGS">FIG. 26</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0130<figref idref="DRAWINGS">FIG. 27</figref> is a plane view of the vibrating device shown in <figref idref="DRAWINGS">FIG. 2</figref> from the opening end of the frame (lower side).

0131<figref idref="DRAWINGS">FIG. 28</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0132<figref idref="DRAWINGS">FIG. 29</figref> illustrates a state of magnetic lines generated by a magnet and yoke of an actuator shown in <figref idref="DRAWINGS">FIG. 28</figref>.

0133<figref idref="DRAWINGS">FIG. 30</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0134<figref idref="DRAWINGS">FIG. 31</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0135<figref idref="DRAWINGS">FIG. 32</figref> is a cross-sectional view of a jet flow generating device having a vibrating device according to yet another embodiment of the present invention.

0136<figref idref="DRAWINGS">FIG. 33</figref> is a cross-sectional diagram illustrating a modification of the jet flow generating device shown in <figref idref="DRAWINGS">FIG. 32</figref>.

0137<figref idref="DRAWINGS">FIG. 34</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0138<figref idref="DRAWINGS">FIG. 35</figref> is a cross-sectional view along line B-B in <figref idref="DRAWINGS">FIG. 34</figref>.

0139<figref idref="DRAWINGS">FIG. 36</figref> is a cross-sectional view of a vibrating device according to yet another embodiment of the present invention.

0140<figref idref="DRAWINGS">FIG. 37</figref> is a plane view of a vibrating member shown in <figref idref="DRAWINGS">FIG. 36</figref>.

0141<figref idref="DRAWINGS">FIG. 38</figref> is a cross-sectional view of a vibrating device (a vibrating device to which a bent feeder line has been wired) according to yet another embodiment of the present invention.

0142<figref idref="DRAWINGS">FIG. 39</figref> is a cross-sectional diagram illustrating a vibrating device to which a feeder line with a small bending radius has been wired.

0143<figref idref="DRAWINGS">FIG. 40</figref> is an enlarged view illustrating a feeder line which has been braided.

0144<figref idref="DRAWINGS">FIG. 41A</figref> is an enlarged diagram illustrating a bent portion of the feeder line.

0145<figref idref="DRAWINGS">FIG. 41B</figref> is an enlarged diagram illustrating a bent portion of the feeder line.

0146<figref idref="DRAWINGS">FIG. 42</figref> is a cross-sectional view of a jet flow generating device according to another embodiment of the present invention.

0147<figref idref="DRAWINGS">FIG. 43</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0148<figref idref="DRAWINGS">FIG. 44</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0149<figref idref="DRAWINGS">FIG. 45</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0150<figref idref="DRAWINGS">FIG. 46</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0151<figref idref="DRAWINGS">FIG. 47</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0152<figref idref="DRAWINGS">FIG. 48</figref> is a diagram illustrating an airflow in a case wherein the cross-sectional shape of the feeder line is a circle.

0153<figref idref="DRAWINGS">FIG. 49</figref> is a diagram illustrating an airflow in a case wherein the cross-sectional shape of the feeder line is a flattened.

0154<figref idref="DRAWINGS">FIG. 50</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0155<figref idref="DRAWINGS">FIG. 51</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0156<figref idref="DRAWINGS">FIG. 52</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0157<figref idref="DRAWINGS">FIG. 53</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0158<figref idref="DRAWINGS">FIG. 54</figref> is a cross-sectional view illustrating a part of an electronic device according to an embodiment of the present invention.

0159<figref idref="DRAWINGS">FIG. 55</figref> is a partial-cutaway perspective view of the jet flow generating device implemented in a laptop PC.

0160<figref idref="DRAWINGS">FIG. 56</figref> is a perspective diagram illustrating a heat sink, upon which air from the jet flow generating device is blown.

0161<figref idref="DRAWINGS">FIG. 57</figref> is a perspective diagram illustrating a combination of a jet flow generating device and a heat sink.

0162<figref idref="DRAWINGS">FIG. 58</figref> is a perspective diagram illustrating another form of a combination of a jet flow generating device and a heat sink.

0163<figref idref="DRAWINGS">FIG. 59</figref> is a perspective diagram illustrating yet another form of a jet flow generating device and a heat sink.

0164<figref idref="DRAWINGS">FIG. 60</figref> is a diagram illustrating the airflow when the jet flow generating device is installed in the housing of an electronic device.

0165<figref idref="DRAWINGS">FIG. 61</figref> is a diagram illustrating another form of the airflow.

0166<figref idref="DRAWINGS">FIG. 62</figref> is a partial-cutaway perspective view of a PC, wherein the two-stage jet flow generating device and heat sink implemented in a PC.

0167<figref idref="DRAWINGS">FIG. 63</figref> is a partial cutaway perspective view of a display device having a form wherein the jet flow generating device has been implemented in a display device.

0168<figref idref="DRAWINGS">FIG. 64</figref> is a partial cutaway perspective view of a projector having a form wherein the jet flow generating device has been implemented in a projector.

0169<figref idref="DRAWINGS">FIG. 65</figref> is a cross-sectional view of a jet flow generating device according to yet another form.

0170<figref idref="DRAWINGS">FIG. 66</figref> is a cross-sectional view along line C-C in <figref idref="DRAWINGS">FIG. 65</figref>.

0171<figref idref="DRAWINGS">FIG. 67</figref> is a diagram illustrating a form wherein an inclined face is formed on the outer face of a housing, and a circuit board is attached to the inclined face.

0172<figref idref="DRAWINGS">FIG. 68</figref> is a cross-sectional view of a jet flow generating device according to yet another form.

0173<figref idref="DRAWINGS">FIG. 69</figref> is a cross-sectional view of a jet flow generating device according to yet another form.

0174<figref idref="DRAWINGS">FIG. 70</figref> is a cross-sectional view along line D-D in <figref idref="DRAWINGS">FIG. 69</figref>.

0175<figref idref="DRAWINGS">FIG. 71</figref> is a perspective view illustrating a frame, elastic supporting member, and vibrating plate.

0176<figref idref="DRAWINGS">FIG. 72</figref> is a cross-sectional view illustrating another example wherein the frame and elastic supporting member have been molded integrally, illustrating a part of the frame and elastic supporting member.

0177<figref idref="DRAWINGS">FIG. 73</figref> is a cross-sectional view of a state wherein the elastic supporting member covers the frame with a frame covering portion thereof, and covers the vibrating plate with a vibrating plate covering portion thereof.

0178<figref idref="DRAWINGS">FIG. 74</figref> is a cross-sectional view of a jet flow generating device according to yet another form.

0179<figref idref="DRAWINGS">FIG. 75A</figref> is a diagram illustrating a simulation of a magnetic field generated by a magnetic circuit in a case wherein a metal plate is not present.

0180<figref idref="DRAWINGS">FIG. 75B</figref> is a diagram illustrating a simulation of a magnetic field generated by a magnetic circuit in a case wherein a metal plate is present.

0181<figref idref="DRAWINGS">FIG. 76</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0182<figref idref="DRAWINGS">FIG. 77</figref> is a cross-sectional view illustrating another embodiment of a coil wound on a coil bobbin, shown in <figref idref="DRAWINGS">FIG. 4</figref> and other drawings.

0183<figref idref="DRAWINGS">FIG. 78</figref> is a cross-sectional view illustrating a coil wherein the conductor wire has a circular cross-sectional shape.

0184<figref idref="DRAWINGS">FIG. 79</figref> is a cross-sectional view illustrating another embodiment of a coil wound on a coil bobbin.

0185<figref idref="DRAWINGS">FIG. 80</figref> is a cross-sectional view illustrating an odd-layered coil.

0186<figref idref="DRAWINGS">FIG. 81</figref> is a plane view illustrating a jet flow generating device according to yet another embodiment of the present invention.

0187<figref idref="DRAWINGS">FIG. 82</figref> is a cross-sectional view of the jet flow generating device shown in <figref idref="DRAWINGS">FIG. 81</figref>.

0188<figref idref="DRAWINGS">FIG. 83</figref> is a plane view illustrating a state wherein a heat transport device, which transports by phase change of a working fluid using capillary action, is installed in the two-stage jet flow generating device shown in <figref idref="DRAWINGS">FIG. 81</figref>.

0189<figref idref="DRAWINGS">FIG. 84</figref> is a rear view of the jet flow generating device shown in <figref idref="DRAWINGS">FIG. 83</figref>.

0190<figref idref="DRAWINGS">FIG. 85</figref> is a cross-sectional view of a jet flow generating device according to yet another embodiment.

0191<figref idref="DRAWINGS">FIG. 86</figref> is a plane view of a jet flow generating device according to yet another embodiment.

0192<figref idref="DRAWINGS">FIG. 87</figref> is a plane view of a jet flow generating device according to yet another embodiment, and a part of housing of an electronic device.

0193<figref idref="DRAWINGS">FIG. 88</figref> is a perspective view of the housing shown in <figref idref="DRAWINGS">FIG. 87</figref>.

0194<figref idref="DRAWINGS">FIG. 89</figref> is a diagram illustrating a modification of the form shown in <figref idref="DRAWINGS">FIG. 87</figref>.

0195<figref idref="DRAWINGS">FIG. 90</figref> is a plane view illustrating a part of the interior of an electronic device with multiple jet flow generating devices built in.

0196<figref idref="DRAWINGS">FIG. 91</figref> is a diagram illustrating a modification of the form shown in <figref idref="DRAWINGS">FIG. 90</figref>.

0197<figref idref="DRAWINGS">FIG. 92</figref> is a cross-sectional view of a jet flow generating device according to yet another form.

0198<figref idref="DRAWINGS">FIG. 93</figref> is a cross-sectional view illustrating a part of a jet flow generating device according to yet another embodiment.

0199<figref idref="DRAWINGS">FIG. 94</figref> is a side view of the jet flow generating device shown in <figref idref="DRAWINGS">FIG. 93</figref>.

0200<figref idref="DRAWINGS">FIG. 95</figref> is a cross-sectional view of a jet flow generating device according to yet another form.

0201<figref idref="DRAWINGS">FIG. 96</figref> is a cross-sectional view illustrating a part of a jet flow generating device according to yet another embodiment.

0202<figref idref="DRAWINGS">FIG. 97</figref> is a plane view of the vibrating plate shown in <figref idref="DRAWINGS">FIG. 96</figref>.

0203<figref idref="DRAWINGS">FIG. 98</figref> is a cross-sectional view illustrating a part of a jet flow generating device according to yet another form.

0204<figref idref="DRAWINGS">FIG. 99</figref> is a diagram illustrating a part of the inner wall of the housing of the jet flow generating device shown in <figref idref="DRAWINGS">FIG. 98</figref>.

0205<figref idref="DRAWINGS">FIG. 100</figref> is a pane view illustrating the vibrating plate of the jet flow generating device shown in <figref idref="DRAWINGS">FIG. 98</figref>.

0206<figref idref="DRAWINGS">FIG. 101</figref> is a perspective view illustrating a vibrating plate according to yet another form.

0207<figref idref="DRAWINGS">FIG. 102</figref> is a cross-sectional view illustrating the configuration of the actuator shown in <figref idref="DRAWINGS">FIG. 101</figref>.

0208<figref idref="DRAWINGS">FIG. 103</figref> is a cross-sectional view illustrating a part of a jet flow generating device according to yet another form.

BEST MODE FOR CARRYING OUT THE INVENTION

0209The following is a description of embodiments of the present invention, with reference to the drawings.

0210<figref idref="DRAWINGS">FIG. 1</figref> is a perspective view illustrating a jet flow generating device according to an embodiment of the present invention, and <figref idref="DRAWINGS">FIG. 2</figref> is a cross-sectional view of the jet flow generating device shown in <figref idref="DRAWINGS">FIG. 1</figref>.

0211A jet flow generating device <b>10</b> has a housing <b>1</b> of which the rear portion has a cylindrical shape, and a vibrating device disposed within the housing <b>1</b>. Multiple nozzles <b>2</b><i>a </i>and <b>2</b><i>b </i>are each arrayed on a front face <b>1</b><i>a </i>of the housing <b>1</b>. As shown in <figref idref="DRAWINGS">FIG. 2</figref>, the interior of the housing is divided into an upper chamber <b>11</b><i>a </i>and lower chamber <b>11</b><i>b </i>by a vibrating device <b>15</b>, an attaching portion <b>7</b> whereby the vibrating device <b>15</b> is attached. Openings <b>12</b><i>a </i>and <b>12</b><i>b </i>are formed at positions corresponding to nozzles <b>2</b><i>a </i>and <b>2</b><i>b</i>, on the front face <b>1</b><i>a </i>of the housing <b>1</b> where the nozzles <b>2</b><i>a </i>and <b>2</b><i>b </i>are situated. Thus, the upper chamber <b>11</b><i>a </i>and the lower chamber <b>11</b><i>b </i>each communicate with the ambient atmosphere. The chambers <b>11</b><i>a </i>and <b>11</b><i>b </i>each have approximately the same volume. That is to say, the upper chamber <b>11</b><i>a </i>is thicker than the lower chamber <b>11</b><i>b </i>in the vertical direction (thickness direction) in <figref idref="DRAWINGS">FIG. 2</figref>, by an amount equivalent to that of the vibrating device <b>15</b> disposed in the upper portion. Accordingly, the amount of gas discharged alternatingly from the nozzles <b>2</b><i>a </i>and <b>2</b><i>b </i>can be made to be the same, improving quietness.

0212The vibrating device <b>15</b> has a configuration similar to that of a speaker, for example. The vibrating device <b>15</b> includes a frame <b>4</b>, an actuator <b>5</b> mounted to the frame <b>4</b>, and a vibrating member <b>3</b> supported on the frame <b>4</b> by an elastic supporting member <b>6</b>. <figref idref="DRAWINGS">FIG. 3</figref> is a perspective view illustrating the vibrating member <b>3</b>. The vibrating member <b>3</b> is configured having a side plate <b>3</b><i>b </i>formed on the perimeter of a disc-shaped vibrating plate <b>3</b><i>a</i>. Of a front face <b>3</b><i>a</i>-<b>1</b> and rear face <b>3</b><i>a</i>-<b>2</b> of the vibrating plate <b>3</b><i>a</i>, the side plate <b>3</b><i>b </i>is erected on the rear face <b>3</b><i>a</i>-<b>2</b>, for example. A vent port <b>4</b><i>a </i>for venting air in the housing <b>1</b> in and out of the frame <b>4</b> is formed in the frame <b>4</b>.

0213The vibrating member <b>3</b> is formed of, for example, resin, paper, or metal. Particularly, forming the vibrating member <b>3</b> of paper realizes marked reduction in weight. Paper does not lend itself to forming arbitrary shapes as resin, but is advantageous regarding weight. Reduction in weight is not a problem for the vibrating member <b>3</b> since it has the side plate <b>3</b><i>b </i>and is highly rigid. In the event that the vibrating member <b>3</b> is formed of resin, arbitrary shapes are readily formed by molding. On the other hand, in the event that the vibrating member <b>3</b> is formed of metal, there are materials such as magnesium which are lightweight and can be formed by injection molding, and accordingly can be used depending on the case.

0214<figref idref="DRAWINGS">FIG. 4</figref> is an enlarged cross-sectional view illustrating the actuator <b>5</b>. A magnet <b>14</b> which is magnetized in the vibrating direction R of the vibrating plate <b>3</b><i>a </i>is built in the inside of a cylindrical yoke <b>8</b>, and the magnet <b>14</b> is attached with a disc-shaped yoke <b>18</b>, for example. A magnetic field such as shown in <figref idref="DRAWINGS">FIG. 5</figref> is generated by the magnet <b>14</b>, and the yokes <b>8</b> and <b>18</b>, thereby configuring a magnetic circuit. A coil bobbin <b>9</b> around which a coil <b>17</b> is wound is configured to enter or leave a space between the magnet <b>14</b> and the yoke <b>8</b>. That is to say, the actuator <b>5</b> is made up of a voice coil motor. An electric signal is supplied to the actuator <b>5</b> from an unshown driving IC for example via a feeder line <b>16</b>. The yoke <b>8</b> is fixed in the center of the inner side of the frame <b>4</b>, and the coil bobbin <b>9</b> is fixed in the front face <b>3</b><i>a</i>-<b>1</b> of the vibrating plate <b>3</b><i>a</i>. The plate-shaped yoke <b>18</b> is, as described above, has a disc shape, for example. However, the shape of the yoke <b>18</b> is not restricted to a circle, but may be an oval or rectangle. It is also thought that the shape similar to the face <b>3</b><i>a</i>-<b>1</b> (or <b>3</b><i>a</i>-<b>2</b>) of the vibrating plate <b>3</b><i>a </i>is reasonable. According to such an actuator <b>5</b>, the vibrating member <b>3</b> can be vibrated in the direction of arrow R.

0215The housing <b>1</b> is, for example, made up of a resin or rubber or metal. A resin and a rubber are readily fabricated with molding, which are suitable for mass production. Also, in the event that the housing <b>1</b> is made up of a resin or rubber, sound generated by driving the actuator <b>5</b>, or air flow sound generated by vibrating the vibrating plate <b>3</b><i>a</i>, and so forth can be suppressed. In other words, in the event that the housing <b>1</b> is made up of a resin or rubber, the attenuation factor of such sound also increases, and accordingly, noise can be suppressed. Further, in this case, reduction in weight can be handled, and also reduction in costs is realized. In the event that the housing <b>1</b> is fabricated with injection molding of resin or the like, the housing <b>1</b> can be molded integrally with the nozzles <b>2</b><i>a </i>and <b>2</b><i>b</i>. In the event that the housing <b>1</b> is made up of a material of which the thermal conductivity is high, e.g., metal, the heat emitted from the actuator <b>5</b> is allowed to escape to the housing <b>1</b>, and the heat can be radiated to the outside of the housing <b>1</b>. Examples of this metal include aluminum and copper. In the event of taking thermal conductivity into consideration, the material is not restricted to metal, and rather may be carbon. As for the metal, magnesium by which injection molding can be performed or the like can be employed. In the event that the magnetic field leaked from the magnetic circuit of the actuator <b>5</b> affects upon another device of the device, the device which eliminates a leak magnetic field is required. One device thereof is to make up the housing <b>1</b> with a magnetic material, e.g., iron or the like. Thus, a leak magnetic field is reduced to a remarkable level. Further, with use under a high temperature, or a particular application, a housing made up of ceramics may be employed.

0216As described above, in the event that a high heat conduction material is employed for the housing <b>1</b> for heat dissipation, it is also desirable to employ a material of which the thermal conductivity is high for the frame <b>4</b>. In this case as well, metal or carbon is employed for the frame <b>4</b>. However, in the event that thermal conductivity is not taken into consideration very much, resin can be used. In the event of a resin, a cheap and lightweight frame can be fabricated with injection molding. A part of the frame <b>4</b> can be made up of a magnetic substance. Thus, the yoke of the actuator <b>5</b> can be made up of the magnetic substance thereof, and also flux density can be improved.

0217An elastic supporting member <b>6</b> is, for example, made up of a rubber or resin or the like. The elastic supporting member <b>6</b> makes up a bellows shape, and as viewed from the top face, which makes up a ring shape. The vibrating member <b>3</b> is principally supported by the actuator <b>5</b>, but in order to prevent the lateral deflection which is deflection in the perpendicular direction as to the vibrating direction R of the vibrating member <b>3</b>, the elastic supporting member <b>6</b> includes a function arranged to support the vibrating member <b>3</b>. Also, the elastic supporting member <b>6</b>, as described above, separates the chambers <b>11</b><i>a </i>and <b>11</b><i>b</i>, whereby gas can be prevented from communication between the chambers <b>11</b><i>a </i>and <b>11</b><i>b </i>when the vibrating member <b>3</b> is vibrated. The elastic supporting member <b>6</b> makes up a bellows shape, but the number of peak portions and the number of trough portions are preferably each one as shown in <figref idref="DRAWINGS">FIG. 2</figref>, which will be referred to as two folds hereafter. This is because in the event that only one trough portion or one peak portion, the height in the vertical direction in <figref idref="DRAWINGS">FIG. 2</figref> becomes high, which is contrary to reduction in thickness, but in the event that there are multiple trough portions and multiple peak portions, complex movement other than the vibrating direction R is generated when the vibrating member <b>3</b> is vibrated, so there is a possibility that efficiency may be deteriorated.

0218Note that an arrangement has been made wherein the housing <b>1</b> is provided with the nozzles <b>2</b><i>a </i>and <b>2</b><i>b</i>, but an arrangement may be made wherein the housing <b>1</b> is simply provided with an opening instead of the nozzles.

0219Description will be made regarding the operations of the jet flow generating device <b>10</b> thus configured.

0220For example, upon AC voltage of a sine wave being applied to the actuator <b>5</b>, the vibrating member <b>3</b> performs sinusoidal vibration. Thus, the capacity within the chambers <b>11</b><i>a </i>and <b>11</b><i>b </i>increases or decreases. Along with the capacity change of the chambers <b>11</b><i>a </i>and <b>11</b><i>b</i>, the pressure of each of the chambers <b>11</b><i>a </i>and <b>11</b><i>b </i>is changed, and according to this, an air flow is generated via each of the nozzles <b>12</b><i>a </i>and <b>12</b><i>b </i>as a pulsating flow. For example, upon the vibrating member <b>3</b> being displaced in the direction where the capacity of the chamber <b>11</b><i>a </i>increases, the pressure of the chamber <b>11</b><i>a </i>decreases, and the pressure of the chamber <b>11</b><i>b </i>increases. Thus, the air outside the housing <b>1</b> is flowed into the chamber <b>11</b><i>a </i>via the nozzle <b>12</b><i>a</i>, and the air within the chamber <b>11</b><i>b </i>is jetted outside via the nozzle <b>12</b><i>b</i>. Conversely, upon the vibrating member <b>3</b> being displaced in the direction where the capacity of the chamber <b>11</b><i>a </i>decreases, the pressure of the chamber <b>11</b><i>a </i>increases, and the pressure of the chamber <b>11</b><i>b </i>decreases. Thus, the air within the chamber <b>11</b><i>a </i>is jetted outside via the nozzle <b>12</b><i>a</i>, and the air outside the housing <b>1</b> is flowed into the chamber <b>11</b><i>b </i>via the nozzle <b>12</b><i>b</i>. When the air is jetted from the nozzles <b>12</b><i>a </i>and <b>12</b><i>b</i>, the atmospheric pressure around the nozzles <b>12</b><i>a </i>and <b>12</b><i>b </i>falls, and accordingly, the air around the nozzles <b>12</b><i>a </i>and <b>12</b><i>b </i>is involved in the air jetted from each nozzle. That is to say, this is a synthesis jet flow. Such a synthesis jet flow is sprayed on a heat-generating member or a high-fever part, whereby the heat-generating member or high-fever part thereof can be cooled.

0221On the other hand, when the air is jetted from the nozzles <b>12</b><i>a </i>and <b>12</b><i>b</i>, noise is generated from each of the nozzles <b>12</b><i>a </i>and <b>12</b><i>b </i>individually. However, each acoustic wave generated from each of the nozzles <b>12</b><i>a </i>and <b>12</b><i>b </i>is an acoustic wave of an opposite phase, so can be weakened mutually. Thus, noise is suppressed, and quietness can be realized.

0222According to the present embodiment, the vibrating member <b>3</b> includes the side plate <b>3</b><i>b</i>, so the rigidity of the overall of the vibrating member <b>3</b> improves, whereby the bending of the vibrating plate <b>3</b><i>a </i>can be suppressed, and vibration can be applied to gas effectively. Also, according to the present embodiment, high rigidity is not realized by thickening the vibrating plate <b>3</b><i>a </i>itself, but high rigidity of the overall of the vibrating member <b>3</b> is realized by forming the side plate <b>3</b><i>b</i>, and accordingly, the weight of the vibrating member <b>3</b> does not become heavy.

0223<figref idref="DRAWINGS">FIG. 6</figref> is a perspective view illustrating another embodiment of a vibrating member. With embodiments described below, description will be simplified or omitted regarding the same members, same functions, and so forth as those according to the embodiment shown in <figref idref="DRAWINGS">FIG. 1</figref> through <figref idref="DRAWINGS">FIG. 4</figref>, and description will be made centered on different points. Also, as for the material of each member as well, each member can be fabricated basically with the above-mentioned material. A vibrating member <b>13</b>, as with the state shown in <figref idref="DRAWINGS">FIG. 2</figref>, is built in the vibrating device <b>15</b>. With the vibrating member <b>13</b>, multiple holes <b>13</b><i>d </i>are provided in a side plate <b>13</b><i>b</i>. The number of the holes <b>13</b><i>d </i>is not necessarily greater than 1, but may be one. Thus, reduction in weight regarding the vibrating member <b>13</b> can be realized while maintaining the rigidity of the vibrating member <b>13</b>, and also low-power consumption can be realized.

0224<figref idref="DRAWINGS">FIG. 7</figref> is a perspective view illustrating yet another embodiment of a vibrating member. With this vibrating member <b>23</b>, as with the vibrating member <b>13</b> shown in <figref idref="DRAWINGS">FIG. 6</figref>, multiple holes <b>23</b><i>d </i>are provided in a side plate <b>23</b><i>b</i>. Further, ribs <b>23</b><i>e </i>are provided so as to connect a vibrating plate <b>23</b><i>a </i>and the side plate <b>23</b><i>b</i>. Thus, the rigidity of the vibrating member <b>23</b> can be further improved.

0225As a vibrating member <b>33</b> according to yet another embodiment shown in <figref idref="DRAWINGS">FIG. 8</figref>, even if a rib <b>33</b><i>e </i>is provided with a hole <b>33</b><i>e</i>-<b>1</b>, reduction in weight can be realized. In the event that the vibrating member <b>13</b>, <b>23</b>, and <b>33</b> such as shown in <figref idref="DRAWINGS">FIG. 6</figref> through <figref idref="DRAWINGS">FIG. 8</figref> are, for example, made up of a resin, even with the shapes of these vibrating members <b>13</b>, <b>23</b>, and <b>33</b>, the vibrating members <b>13</b>, <b>23</b>, and <b>33</b> can be fabricated by subjecting a resin to injection molding.

0226<figref idref="DRAWINGS">FIG. 9A</figref> through <figref idref="DRAWINGS">FIG. 9B</figref> are plane views illustrating another embodiment of the shapes of the above-mentioned vibrating members <b>3</b> and <b>13</b>, and the vibrating plate <b>3</b><i>a </i>of the other vibrating members. The shape may be an oval such as shown in <figref idref="DRAWINGS">FIG. 9A</figref>, or may be an ellipse such as shown in <figref idref="DRAWINGS">FIG. 9B</figref>. The shapes shown in <figref idref="DRAWINGS">FIG. 9C</figref> through <figref idref="DRAWINGS">FIG. 9E</figref> are each a square, a rectangle, and a rectangle of which each corner is a curved line. Thus, the plane shapes of the vibrating plate <b>3</b><i>a </i>and the like may be arbitrary shapes, but in the event of a circle, fabrication including metal mold and the like is readily performed. In the event that a vibrating device including a vibrating plate shown in <figref idref="DRAWINGS">FIG. 9C through 9E</figref> is implemented in the housing <b>1</b>, the plane shape of the housing <b>1</b> is preferably a rectangle so as to match the shape of the vibrating plate. For example, an axial flow fan and so forth rotate to blow air, so the plane shape thereof is a circle. On the other hand, the vibrating plate of the jet flow generating device <b>10</b> is not necessarily a circle, and rather a flexible shape such as shown in <figref idref="DRAWINGS">FIG. 9A through 9E</figref> can be realized. Thus, the shape can be handled flexibly, whereby in the event that the jet flow generating device <b>10</b> is implemented in an electronic device such as a PC or the like for example, the flexibility regarding the placement and shape thereof can be improved.

0227Also, the top face or under face of the housing <b>1</b> of the jet flow generating device <b>10</b> can be made similar to the face of various types of shape of the vibrating plate shown in <figref idref="DRAWINGS">FIG. 7</figref>. Thus, an air flow which is the most appropriate to the shape of the vibrating plate, and is effective can be generated within the housing <b>1</b>.

0228<figref idref="DRAWINGS">FIG. 10</figref> is a cross-sectional view illustrating another embodiment of a vibrating device. <figref idref="DRAWINGS">FIG. 11</figref> is the perspective view thereof. With a vibrating device <b>25</b>, the vibrating member <b>3</b> is attached to a cylindrical frame <b>24</b> via the elastic supporting member <b>6</b>. With the frame <b>24</b>, two air communication openings <b>24</b><i>a </i>which are long close to 180 degrees are provided, for example, at the side face thereof. With the vibrating member <b>3</b>, the actuator <b>5</b> is disposed on a face <b>3</b><i>a</i>-<b>2</b> which is a side where the side plate <b>3</b><i>b </i>is installed upright. In other words, the direction of the vibrating member <b>3</b> is the opposite direction of the state shown in <figref idref="DRAWINGS">FIG. 2</figref> with the vibrating direction R. Thus, reduction in thickness regarding the overall of the vibrating device <b>25</b> can be realized.

0229<figref idref="DRAWINGS">FIG. 12</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. The elastic supporting member <b>36</b> of this vibrating device <b>45</b> is not a bellows shape, of which the cross section is linear. An elastic supporting member <b>46</b> of a vibrating device <b>55</b> shown in <figref idref="DRAWINGS">FIG. 13</figref> is made up of only one trough portion. With such elastic supporting members, the communication of air between the front face and the rear face side of the vibrating member <b>3</b> can be prevented.

0230<figref idref="DRAWINGS">FIG. 14</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. The elastic supporting member <b>76</b> of this vibrating device <b>95</b> is made up of one peak portion and two trough portions. Thus, bellows having more than two folds may be employed.

0231<figref idref="DRAWINGS">FIG. 15</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. A second elastic supporting member <b>26</b> (hereafter, referred to as a damper) is implemented between the side plate <b>3</b><i>b </i>and the frame <b>4</b> of this vibrating device <b>35</b> aside from a first elastic supporting member <b>6</b> (hereafter, referred to as an edge member). The damper <b>26</b> has, for example, a ring shape. The edge member <b>6</b> and the damper <b>26</b> are connected to both ends in the vibrating direction in the side plate <b>3</b><i>b</i>. Thus, the side plate <b>3</b><i>b </i>is supported with the two positions of the vibrating direction R, whereby stable vibration can be obtained by preventing the lateral deflection of the vibrating member <b>3</b>.

0232<figref idref="DRAWINGS">FIG. 16</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. <figref idref="DRAWINGS">FIG. 17</figref> is a cross-sectional view along line A-A in <figref idref="DRAWINGS">FIG. 16</figref>. The damper <b>56</b> of this vibrating device <b>65</b> has, for example, a plate-spring shape. Also, as shown in <figref idref="DRAWINGS">FIG. 18</figref>, a damper <b>66</b> may have a wire shape. The dampers <b>56</b> and <b>66</b> are configured of such a relatively thin member, whereby the resistance of the original deflection in the vibrating direction can be reduced while preventing the lateral deflection of the vibrating member <b>3</b>.

0233The edge member <b>6</b><i>a </i>and damper <b>6</b><i>b </i>of the vibrating device <b>105</b> shown in <figref idref="DRAWINGS">FIG. 19</figref> have the same shape, and also are made up of the same material. With such a configuration, the vibration of the vibrating member <b>3</b> can be stabilized. Also, the edge portion <b>6</b><i>a </i>and the damper <b>6</b><i>b </i>are the same, which are suitable for mass production, and also are reasonable in costs.

0234The same articles are employed for the edge member <b>6</b><i>a </i>and the damper <b>6</b><i>b </i>of the vibrating device <b>115</b> shown in <figref idref="DRAWINGS">FIG. 20</figref>, which make up a symmetrical shape in the vibrating direction of the vibrating member <b>3</b>. According to such a configuration, the amplitudes of both sides from the neutral position of the vibrating member <b>3</b> when the vibrating member <b>3</b> is not vibrated become the same, thereby obtaining effective vibration. Also, as shown in <figref idref="DRAWINGS">FIG. 20</figref>, in the event that a feeder line <b>16</b> is wired, a damper <b>6</b><i>b </i>serving as an elastic supporting member at the side close to the feeder line <b>16</b> is disposed such that the frame <b>4</b> side (outer side) becomes a peak portion, and the vibrating member <b>3</b> side (inner side) becomes a trough portion. Usually, with these edge member <b>6</b><i>a </i>and damper <b>6</b><i>b</i>, the amplitude of the vibrating member <b>3</b> side which is the inner side is greater than the amplitude of the frame <b>4</b> side which is the outer side. Accordingly, a trough portion is disposed at the vibrating member <b>3</b> side of which the amplitude is great, and accordingly, the space where the feeder line <b>16</b> moves due to vibration becomes wide, i.e., the flexibility of the movement of the feeder line <b>16</b> is improved, whereby line breakage can be prevented.

0235<figref idref="DRAWINGS">FIG. 21</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. This vibrating device <b>85</b> includes a cylindrical frame <b>34</b> as with <figref idref="DRAWINGS">FIG. 10</figref>. A vibrating plate <b>33</b><i>a </i>of a vibrating member <b>33</b> has a cone shape, and the actuator <b>5</b> is disposed on a face <b>33</b><i>a</i>-<b>2</b> of the inner side of the cone-shaped vibrating plate <b>33</b><i>a </i>thereof. The side plate <b>33</b><i>b </i>of the vibrating member <b>33</b> is installed upright at a face <b>33</b><i>a</i>-<b>1</b> side which is the opposite side of the face <b>33</b><i>a</i>-<b>2</b>. An edge portion <b>6</b><i>a </i>and a damper <b>6</b><i>b </i>are disposed between the side plate <b>33</b><i>b </i>and the frame <b>34</b> so as to make up a symmetrical shape. According to such a configuration, the vibrating device <b>85</b> can be extremely reduced in thickness.

0236<figref idref="DRAWINGS">FIG. 22</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. This vibrating device <b>125</b> includes a vibrating member <b>43</b> which slides at the inner side of a cylindrical frame <b>44</b>. The vibrating member <b>43</b> is configured so as to provide a side plate <b>43</b><i>b </i>which is installed upright at both sides of the vibrating direction R at the edge portion of a vibrating plate <b>43</b><i>a</i>. So to speak, the relation between the side plate <b>43</b><i>b </i>and the inner side of the frame <b>44</b> becomes the relation between a piston and a cylinder. With such a configuration, the vibrating member <b>43</b> can be vibrated in a stable manner while suppressing the lateral deflection and so forth of the vibrating member <b>43</b>. In this case, in order to reduce frictional resistance as to the frame <b>44</b> of the side plate <b>43</b><i>b</i>, for example, it is preferred that a fluid <b>47</b> or the like such as lubricating oil is applied. Alternatively, at least one of the inner side of the frame <b>44</b>, and the contact face of the side plate <b>43</b><i>b </i>may be subjected to surface treatment so as to reduce frictional resistance. Examples of this surface treatment include Teflon (registered trademark) processing.

0237The vibrating device <b>135</b> shown in <figref idref="DRAWINGS">FIG. 23</figref> is a modification of the vibrating device <b>125</b> shown in <figref idref="DRAWINGS">FIG. 22</figref>. The edge portion of a vibrating plate <b>53</b><i>a</i>, and the edge portion of a protruding portion <b>53</b><i>c </i>such as a flange which protrudes in the diameter direction from a side plate <b>53</b><i>b </i>are in contact with the inner side of the frame <b>44</b>. Thus, the contact area between a vibrating member <b>53</b> and the frame <b>44</b> can be reduced as small as possible, and accordingly, frictional resistance can be reduced.

0238With the vibrating device <b>125</b> shown in <figref idref="DRAWINGS">FIG. 22</figref>, the side plate <b>43</b><i>b </i>is not necessarily in contact with the frame <b>44</b>, and accordingly, there may be simply provided a gap between both. This gap may be a gap which is sufficiently narrow so as to actually eliminate the communication of air between the front face <b>43</b><i>a</i>-<b>1</b> side and the rear face <b>43</b><i>a</i>-<b>2</b> side of the vibrating member <b>43</b>. This can be applied to the vibrating device <b>135</b> shown in <figref idref="DRAWINGS">FIG. 23</figref> as well.

0239<figref idref="DRAWINGS">FIG. 24</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. With the vibrating member <b>63</b> of this vibrating device <b>145</b>, an edge portion <b>63</b><i>b </i>is integrally provided at the edge portion of a cone-shaped vibrating plate <b>63</b><i>a</i>. For example, in the event that the vibrating member <b>63</b> is, for example, made up of a resin, the vibrating member <b>63</b> can be fabricated with injection molding, and also the number of parts can be reduced, which becomes advantageous in cost. Even in the event that the vibrating member <b>63</b> is, for example, made up of metal, the vibrating member <b>63</b> can be integrally molded with metal mold.

0240<figref idref="DRAWINGS">FIG. 25</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. The vibrating member <b>73</b> of this vibrating device <b>155</b> is made up of a cone-shaped vibrating plate. A gap <b>52</b> is provided between the edge portion of the vibrating member <b>73</b> and a frame <b>54</b>. This gap <b>52</b> may be a gap which actually almost eliminates the communication of air between the front face <b>73</b><i>a</i>-<b>1</b> side and the rear face <b>73</b><i>a</i>-<b>2</b> side of the vibrating member <b>73</b>.

0241<figref idref="DRAWINGS">FIG. 26</figref> is a modification of the vibrating device <b>155</b> shown in <figref idref="DRAWINGS">FIG. 25</figref>. This vibrating device <b>165</b> includes the vibrating member <b>3</b> including the side plate <b>3</b><i>b </i>such as shown in <figref idref="DRAWINGS">FIG. 2</figref> and the like, and gap <b>52</b> which is sufficiently narrow is provided between the side plate <b>3</b><i>b </i>and the frame <b>54</b>.

0242<figref idref="DRAWINGS">FIG. 27</figref> is a plane view of each of the vibrating devices <b>15</b>, <b>25</b>, <b>35</b>, and so forth which have been described so far as viewed from the opening end side (lower portion side) of the frame <b>4</b>. For example, let us say that the area of the face <b>3</b><i>a</i>-<b>1</b> or <b>3</b><i>a</i>-<b>2</b> perpendicular in the vibrating direction of the vibrating plate <b>3</b><i>a </i>of the vibrating member <b>3</b> is an area A, and the area surrounded with the edge member <b>6</b> which is the portion within a face which is generally in parallel with the face <b>3</b><i>a</i>-<b>1</b> or <b>3</b><i>a</i>-<b>2</b> is an area B. In this case, it is preferable that the area B is equal to or smaller than 70% of the area A. In the event of exceeding 70%, the resistance of the vibration of the vibrating member becomes great, and also there is a possibility that noise becomes great. According to an experiment of the present inventors, upon exceeding 70%, noise began to become large enough to bother humans. Preferably, 60% or lower is desirable.

0243<figref idref="DRAWINGS">FIG. 28</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. A hole portion <b>83</b><i>c </i>is formed at the center of the vibrating member <b>83</b> of this vibrating device <b>195</b>. An actuator <b>191</b> is made up of the two magnets <b>14</b>, the plate-shaped yoke <b>18</b> sandwiched with the magnets <b>14</b>, and the coil <b>39</b> wound around the cylindrical coil bobbin <b>32</b> implemented in the hole portion <b>83</b><i>c</i>. <figref idref="DRAWINGS">FIG. 29</figref> illustrates the state of a magnetic force line generated at the magnet <b>14</b> and yoke <b>18</b> of the actuator <b>191</b>. Employing such a release magnetic field makes the actuator <b>191</b> a symmetrical configuration as to a vibrating plate <b>83</b><i>a </i>with the vibrating direction R though efficiency is deteriorated as compared with the closed magnetic circuit described so far. With a symmetrical configuration, a sound level before and after the vibrating plate <b>83</b><i>a </i>can be made the same as much as possible, whereby canceling out of sound can be performed effectively with an opposite phase. Also, a symmetrical configuration is advantageous for reduction in thickness. Regarding whether the magnetic circuit is a closed system or open system may be selected by an application.

0244For example, the actuator <b>191</b> shown in <figref idref="DRAWINGS">FIG. 28</figref> is advantageous in that the layout space of the actuator <b>5</b> can be reduced by the magnet <b>14</b> being disposed at the inner side of the voice coil (coil <b>39</b> and coil bobbin <b>32</b>). This can be applied to the actuator <b>5</b> shown in <figref idref="DRAWINGS">FIG. 4</figref> and so forth. However, with such an actuator <b>5</b> or <b>191</b>, the magnet <b>14</b> is commonly designed small. When the magnet <b>14</b> is small, the magnetic flux density which crosses the voice coil becomes small. In order to increase the magnetic flux density at a voice coil even if the diameter of a magnet is small, it is necessary to employ a magnet of which the residual magnetic flux density is high. A magnet of which the residual magnetic flux density is equal to or greater than 0.3 T (tesla) is preferably employed. Further, in order to increase the magnetic flux density at the gap, a magnet having residual magnetic flux density which is equal to or greater than 1 T through 3 T is recommended. In the case of a magnet of which the residual magnetic flux density is not less than 1 T, the magnet has cooling capacity comparable as a rotation axial flow fan, and accordingly, the jet flow generating device which may be compared also in a size can be realized. For example, the residual magnetic flux density of a neodymium-iron is 1.1 T, so we can say that this is a magnet satisfying the above-mentioned request.

0245<figref idref="DRAWINGS">FIG. 30</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. The actuator <b>301</b> of this vibrating device <b>205</b> is configured such that a plate-shaped yoke <b>28</b> in which a hole <b>28</b><i>a </i>is formed is disposed so as to be sandwiched between two magnets <b>114</b> wherein the frame <b>44</b> is fitly attached to a hole <b>114</b><i>a </i>at the center. The diameter of the hole <b>28</b><i>a </i>of the yoke <b>28</b> is formed smaller than the diameter of the magnet <b>114</b>. A vibrating member <b>43</b> is disposed around the hole <b>28</b><i>a </i>of the yoke <b>28</b>, the coil <b>39</b> is wound around the outer circumferential face of the side plate <b>43</b><i>b </i>of the vibrating member <b>43</b>. According to such a configuration, a comparatively great magnet can be employed as the magnet <b>114</b>. Therefore, magnetic force can be increased, and consequently vibration can be increased. Also, a symmetrical configuration can be applied to the vibrating plate <b>43</b><i>a</i>. Also, this can be contributed to reduction in thickness.

0246<figref idref="DRAWINGS">FIG. 31</figref> is a cross-sectional view illustrating a modification of the vibrating device <b>205</b> shown in <figref idref="DRAWINGS">FIG. 30</figref>. The vibrating member <b>143</b> of this vibrating device <b>215</b> includes a flange-shaped protruding portion <b>143</b><i>c </i>as with the vibrating member <b>53</b> shown in <figref idref="DRAWINGS">FIG. 23</figref>. The edge portion of this protruding portion <b>143</b><i>c </i>is slidably connected to the inner side of the frame <b>44</b>. Also, the gap <b>52</b> is provided, or a lubricant is applied to the gap <b>52</b>. Even with such a configuration, the same advantages as the vibrating devices shown in <figref idref="DRAWINGS">FIG. 23</figref> and <figref idref="DRAWINGS">FIG. 31</figref> can be obtained.

0247<figref idref="DRAWINGS">FIG. 32</figref> is a cross-sectional view illustrating a jet flow generating device including a vibrating device <b>225</b> according to yet another embodiment. With this vibrating device <b>225</b>, the cylindrical coil bobbin <b>37</b> around which the coil <b>17</b> is wound is provided with multiple air communication openings <b>37</b><i>a </i>configured to communicate air between the inner side and outer side of the coil bobbin <b>37</b> thereof. The volume of the space between the coil bobbin <b>37</b> and the magnet <b>14</b> (the space at the inner side of the coil bobbin <b>37</b>) is changed by the coil bobbin <b>37</b> moving. In the event that the coil bobbin <b>37</b> has no air communication opening <b>37</b><i>a</i>, change in atmospheric pressure of the inner space of the coil bobbin <b>37</b> becomes the vibration resistance of a vibrating member <b>93</b>. Also, in the even that there is no air communication opening <b>37</b><i>a</i>, air escapes by passing through the narrow gap between the magnet <b>14</b> and the coil bobbin <b>38</b>, so at this time there is a possibility that sound is generated. However, with a configuration such as shown in <figref idref="DRAWINGS">FIG. 32</figref>, the air present in the inner space of the coil bobbin <b>37</b> can escape to the outside of the coil bobbin <b>37</b> via the air communication openings <b>37</b><i>a</i>, whereby the vibrating member can be vibrated effectively. Also, noise can be reduced. The number of the air communication openings <b>37</b><i>a </i>may be one. The shapes of the air communication openings <b>37</b><i>a </i>may be a circle such as shown in <figref idref="DRAWINGS">FIG. 33</figref>, or a slot shape.

0248Note that in <figref idref="DRAWINGS">FIG. 32</figref> and <figref idref="DRAWINGS">FIG. 33</figref>, the vibrating member <b>93</b> is made up of a plate-shaped vibrating plate, but it is needless to say that like the above-mentioned embodiments, a configuration wherein a side plate is provided may be employed.

0249<figref idref="DRAWINGS">FIG. 34</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. <figref idref="DRAWINGS">FIG. 35</figref> is a cross-sectional view along line B-B in <figref idref="DRAWINGS">FIG. 34</figref>. The actuator of this vibrating device <b>175</b> is made up of the magnet <b>14</b> attached to generally the center at the inner side of the cylindrical frame <b>44</b>, and the plane coil <b>19</b> disposed on the vibrating plate <b>3</b><i>a </i>of the vibrating member <b>3</b> so as to face the magnet <b>14</b>. The coil <b>19</b> is connected with the feeder line <b>16</b>. The vibrating member <b>3</b> is preferably an insulating material such as a resin, rubber, paper, or the like. Alternatively, in the event that the vibrating member <b>3</b> is made up of a conductive material, for example, an unshown insulating sheet may be adhered to between the vibrating plate <b>3</b><i>a </i>and the coil <b>19</b>. For example, AC voltage is applied to the coil <b>19</b>, which causes the magnet <b>14</b> to generate a release magnetic field, whereby the vibrating member <b>3</b> is vibrated in the vibrating direction R. With the present embodiment, a release magnetic field is employed, which deteriorates magnetic flux density, but is advantageous for reduction in thickness, and formation of a symmetrical shape.

0250<figref idref="DRAWINGS">FIG. 36</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. <figref idref="DRAWINGS">FIG. 37</figref> is a plane view illustrating the vibrating member thereof. The actuator of this vibrating device <b>185</b> includes the multiple magnets <b>14</b> arrayed within a frame <b>64</b>, and multiple plane coils <b>29</b> each disposed on a plate-shaped vibrating member <b>83</b> so as to face each magnet <b>14</b>. In this example, the six coils <b>29</b> and the six magnets <b>14</b> are provided. Even with such an actuator, the vibrating member <b>83</b> can be vibrated in the vibrating direction R with a release magnetic field in the same way as described above. According to such a configuration, the number of the coils <b>29</b> and the number of the magnets <b>14</b> are selected as appropriate, whereby the size of the vibrating member <b>83</b> can be set to a desired size within a face generally perpendicular to the vibrating direction R.

0251<figref idref="DRAWINGS">FIG. 38</figref> is a cross-sectional view illustrating a vibrating device according to yet another embodiment. The feeder line <b>16</b> connected to the actuator <b>5</b> of this vibrating device <b>245</b>, for example, such as a portion surrounded with a dashed line in the drawing, is bent gently. Thus, the feeder line is bent gently, whereby possibility of line breakage can be made small, for example, as compared with the rapid bending of the feeder line shown in the dashed line in <figref idref="DRAWINGS">FIG. 39</figref>. For example, as shown in <figref idref="DRAWINGS">FIG. 41A</figref>, in the event that the minimum bending diameter of the feeder line <b>16</b> is about three times of thickness d thereof, stress concentrates on the bending portion thereof and line breakage readily occurs. However, line breakage decreases by setting the minimum bending diameter of the feeder line to five times or more of the thickness d such as shown in <figref idref="DRAWINGS">FIG. 41B</figref>.

0252The feeder line <b>16</b> is vibrated, and accordingly needs to be able to resist line breakage over the life of the vibrating device <b>245</b> and so forth. With the jet flow generating device, the life of tens of thousands of hours is required, and the total vibration frequency becomes billions of times. Therefore, it is desirable to fix the feeder line with a portion where the coil bobbin <b>9</b> side is attached, and a portion where the frame <b>44</b> side is attached. Accordingly, with the vibrating device <b>245</b>, a terminal block <b>21</b> where a terminal <b>22</b> is provided is fixed to the frame <b>44</b>, and the feeder line <b>16</b> is connected and fixed to this terminal block <b>21</b>. Thus, line breakage is prevented, and also wiring at the time of manufacturing of a jet flow generating device in which the vibrating device <b>245</b> is implemented is facilitated.

0253Also, in order to prevent the line breakage of the feeder line <b>16</b>, for example as shown in <figref idref="DRAWINGS">FIG. 40</figref>, a lead wire or the like wherein the feeder line <b>16</b> is subjected to braiding can be employed. Also, a robot cable wherein thin conductive wires are covered with an insulating film, and bundled, is resistant to bending, and suitable as a feeder line.

0254In the event that a feeder line such as shown in <figref idref="DRAWINGS">FIG. 40</figref> is employed, the thickness d thereof is preferably 0.4 mm or thicker. With common speakers, a speaker of which the amplitude is 5 mm or so is a so-called woofer. With a prototype made by the present inventors, a 0.3-mm lead wire for tweeters has been used, and the life thereof has been extremely short, but upon a 0.4-mm lead wire having been employed instead of the 0.3-mm lead wire, the life thereof was extended markedly. Although 14,000 hours have elapsed in a continuous test, the 0.4-mm lead wire has not yet broken.

0255The feeder line <b>16</b> has a particular configuration as described above. Accordingly, with wiring from a portion which sends electric power to the vibrating device, and wiring from the portion which sends power to the jet flow generating device, it is rational to employ another usual conductive wire other than the feeder line <b>16</b> having the above-mentioned configuration. Therefore, providing the terminal block <b>21</b> is very advantageous. The attachment position of the terminal block <b>21</b> may be the frame <b>44</b> of the vibrating device <b>245</b> such as shown in <figref idref="DRAWINGS">FIG. 38</figref>. Alternatively, such as later-described <figref idref="DRAWINGS">FIG. 42</figref> and so forth, the terminal block <b>21</b> may be attached to the housing <b>131</b> of the jet flow generating device <b>130</b>.

0256<figref idref="DRAWINGS">FIG. 42</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment. Part of the frame <b>144</b> of the vibrating device <b>255</b> implemented in this jet flow generating device <b>130</b> also serves as the function of the housing <b>131</b> of the jet flow generating device <b>130</b>. That is to say, part of the housing <b>131</b> is notched, and the vibrating device <b>255</b> is attached to the notched portion thereof. An air communication opening <b>144</b><i>a </i>is formed at the side face of the frame <b>144</b> around the front face <b>131</b><i>a </i>of the housing <b>131</b>. Thus, part of the housing <b>131</b> is configured of the frame <b>144</b>, whereby the jet flow generating device <b>130</b> can be reduced in thickness and size.

0257In this case, if the housing <b>131</b> and the frame <b>144</b> are made up of a material of which the thermal conductivity is excellent, these are advantageous for radiation such as the actuator <b>5</b> and so forth. Examples of a material having high thermal conductivity include metal such as copper, aluminum, or the like, and a carbon resin or the like.

0258Further, the feeder line <b>16</b> of this jet flow generating device <b>130</b> extends at the opposite side of the side where the actuator <b>5</b> is provided as to the vibrating plate <b>3</b><i>a</i>. Also, only the space due to the chamber <b>111</b><i>b </i>formed in the housing <b>131</b> is provided on the space at the opposite side of the actuator <b>5</b>, which facilitates wiring, and also as described above, the bending radius of the feeder line <b>16</b> can be increased.

0259Note that the vibrating device <b>25</b> having a cylindrical frame shown in the above-mentioned <figref idref="DRAWINGS">FIG. 10</figref>, <figref idref="DRAWINGS">FIG. 21</figref>, <figref idref="DRAWINGS">FIG. 22</figref>, <figref idref="DRAWINGS">FIG. 23</figref>, and so forth as well, as shown in <figref idref="DRAWINGS">FIG. 42</figref>, can be implemented in the jet flow generating device so as to also serve as the function of the housing <b>131</b> of the jet flow generating device.

0260Also, with the jet flow generating device <b>130</b>, the terminal block <b>21</b> is preferably attached to the side face of the housing <b>131</b>. When the attachment portion is not the side face but the top face or under face, in the event that the jet flow generating device <b>130</b> is implemented in an unshown electronic device, for convenience of the wiring of a conductive wire from the portion which supplies power to the terminal block <b>21</b>, there is the need to provide space around the top face or under face thereof, which causes a restriction at the time of implementation. Also, this is contrary to reduction in thickness. Accordingly, the side face is better than the top face and the under face. However, of course, even if such space is provided, there is no problem depending on the design at the electronic device side in some cases.

0261With the jet flow generating device <b>130</b> shown in <figref idref="DRAWINGS">FIG. 42</figref>, the actuator <b>5</b> side is not so complicated a shape, either. However, for example, in order to realize reduction in thickness regarding the jet flow generating device, as with the vibrating device <b>265</b> shown in <figref idref="DRAWINGS">FIG. 43</figref>, the actuator <b>5</b> needs to be disposed at the side where the side plate <b>3</b><i>b </i>of the vibrating member <b>3</b> is installed upright. In this case, the configuration of the side where the actuator <b>5</b> is disposed becomes complex, the feeder line <b>16</b> is wired to the terminal block <b>21</b> while avoiding the yoke <b>8</b> and the side plate <b>3</b><i>b</i>, and consequently, the bending radius thereof becomes small. Particularly, with a configuration such as the jet flow generating device <b>140</b> shown in <figref idref="DRAWINGS">FIG. 43</figref>, in order to increase the efficiency of the magnetic circuit of the actuator <b>5</b>, the magnetic flux density of the voice coil portion needs to be increased. Therefore, the magnet <b>14</b> needs to be increased in size, but in this case, the interval between the yoke <b>8</b> and the side plate <b>3</b><i>b </i>is reduced, and accordingly, the space where the feeder line <b>16</b> passes through becomes narrow. That is to say, providing the feeder line <b>16</b> at the actuator <b>5</b> side is disadvantageous for improving the efficiency of the actuator <b>5</b>.

0262Consequently, as shown in <figref idref="DRAWINGS">FIG. 44</figref>, the feeder line <b>16</b> is extracted to the opposite side of the side where the vibrating plate <b>3</b><i>a </i>of the vibrating member <b>3</b> and the actuator <b>5</b> are disposed, and wired, whereby the above-mentioned problem can be eliminated. In this case, the terminal block <b>21</b> is also disposed at the lower side than the vibrating plate <b>3</b><i>a. </i>

0263<figref idref="DRAWINGS">FIG. 45</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment. With this jet flow generating device <b>160</b>, a hole <b>3</b><i>b</i>-<b>1</b> through which the feeder line <b>16</b> passes is provided in the side plate <b>3</b><i>b </i>of the vibrating member <b>3</b>. The feeder line <b>16</b> passes through between the two elastic supporting members <b>6</b>, and is connected to the terminal block <b>21</b>. According to such a configuration, it is avoidable to wire the feeder line <b>16</b> in the inside of a complicated configuration such as described above, thereby facilitating manufacturing. The number of the holes <b>3</b><i>b</i>-<b>1</b> is not restricted to one, multiple holes <b>3</b><i>b</i>-<b>1</b> may be provided, and also the shape of the hole <b>3</b><i>b</i>-<b>1</b> may be a slot shape. Thus, at the time of manufacturing the vibrating device <b>285</b>, the restriction of the attachment angle direction of the vibrating member <b>3</b> (the rotation angle direction of the vibrating member <b>3</b> itself at the face generally perpendicular to the vibrating direction R of the vibrating member <b>3</b>) can be eased or eliminated. This is because in the event of the single hole <b>3</b><i>b</i>-<b>1</b>, the vibrating member <b>3</b> needs to be disposed so as to cause the hole <b>3</b><i>b</i>-<b>1</b> thereof to face the terminal block <b>21</b>.

0264<figref idref="DRAWINGS">FIG. 46</figref> is a modification of the jet flow generating device <b>160</b> shown in <figref idref="DRAWINGS">FIG. 45</figref>. With the frame <b>44</b> of the vibrating device <b>295</b> of this jet flow generating device <b>170</b>, another air communication opening <b>44</b><i>a </i>which differs from the air communication opening <b>44</b><i>a </i>is opened. According to this air communication opening <b>44</b><i>b</i>, when the vibrating member <b>3</b> is vibrated, the air within the frame <b>44</b> escapes via the air communication openings <b>44</b><i>a </i>and <b>44</b><i>b</i>, the flow of air becomes smoother. Also, thus, noise is reduced. In other words, the air resistance when an air flow is generated is reduced within the frame <b>44</b> as less as possible, and accordingly, the opening area of the air communication holes formed in the frame <b>44</b> is preferably great as much as possible. With experimentation by the present inventors, it has been confirmed that in the case of the air communication opening <b>44</b><i>b </i>being provided, noise level decreased by 3 dB or so as compared with the case of no air communication opening <b>44</b><i>b </i>being provided.

0265<figref idref="DRAWINGS">FIG. 47</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment. The features of this jet flow generating device <b>180</b> are in that there is no frame of a vibrating device such as described so far. That is to say, the frame thereof is integrated with the housing <b>181</b> of the jet flow generating device <b>180</b>. According to such a configuration, further reduction in thickness regarding the jet flow generating device <b>180</b> can be realized, the number of parts can also be reduced, and also the integral molding of the housing facilitates manufacturing, which is advantageous for mass production.

0266The cross-sectional shape of the feeder line <b>16</b> such as described above can be made circular such as shown in <figref idref="DRAWINGS">FIG. 48</figref>, but when the vibrating member <b>3</b> is vibrated, there is a possibility that turbulence may occur in the backside of the feeder line <b>16</b> as shown in the drawing. However, as shown in <figref idref="DRAWINGS">FIG. 49</figref>, an air flow can be smoothly controlled if the cross-sectional shape is made into a flat shape. In the case of <figref idref="DRAWINGS">FIG. 49</figref>, it is necessary to take the direction of the cross-sectional shape of the feeder line <b>16</b> into consideration at the time of wiring so as to generate an air flow in the direction such as shown in <figref idref="DRAWINGS">FIG. 49</figref>.

0267Note that an arrangement may be made wherein electric power is supplied with the vibrating member <b>3</b> and the elastic supporting member <b>6</b> as conductive materials without providing a feeder line such as described above.

0268<figref idref="DRAWINGS">FIG. 50</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment. With this jet flow generating device <b>190</b>, a transparent peephole (lid) <b>27</b> is provided on the under face of the housing <b>181</b> of the jet flow generating device <b>180</b> shown in <figref idref="DRAWINGS">FIG. 47</figref> and others. The peephole <b>27</b> is made up of a resin or glass or the like. According to such a configuration, a manufacturer who manufactures the jet flow generating device <b>190</b> can view the interior of the housing <b>231</b>, which facilitates the determination at the time of a defect. The transparency of the peephole <b>27</b> may be transparency which visible light penetrates, and the transmittance of the visible light in this case may be not less than 80%, but of course may be lower than that.

0269Additionally, as shown in <figref idref="DRAWINGS">FIG. 51</figref>, the amplitude, frequency, vibration waveform, and so forth of the vibrating member <b>3</b> can be observed using a laser displacement meter <b>48</b> or the like, which is particularly convenient at the time of debugging. Also, in the event that an unshown antireflection film or the like is stuck on both faces of the peephole <b>27</b>, unnecessary reflection such as an arrow shown in a dashed line is reduced, and consequently, a measurement error at the laser displacement meter <b>48</b> becomes small. At the time of such measurement, it is convenient to stick a member <b>49</b>, which promotes the reflection of light, on the vibrating member <b>3</b>. Note that the peephole <b>27</b> may be omitted, or an arrangement may be made wherein a peephole is simply formed on the housing <b>231</b>.

0270<figref idref="DRAWINGS">FIG. 52</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment. The vibrating member <b>103</b> of this jet flow generating device <b>200</b> is a cylindrical shape, and the actuator <b>5</b> is disposed therein. The top plate <b>103</b><i>a </i>and under plate <b>103</b><i>b </i>of the vibrating member <b>103</b> each have the functions of a vibrating plate, and a side plate <b>103</b><i>c </i>is provided. The actuator <b>5</b> is mounted on a partition plate <b>204</b> which is disposed within a housing <b>201</b>, and is fixed to the housing <b>201</b>. Specifically, the yokes <b>8</b> and <b>18</b> in which the magnet <b>14</b> has been built in are fixed to the partition plate <b>204</b> thereof, and the coil bobbin <b>9</b> is fixed to the inner face of the vibrating member <b>103</b>. The partition plate <b>204</b> is provided with an annular opening <b>204</b><i>a </i>configured to allow the side plate <b>103</b><i>c </i>of the vibrating member <b>103</b> to pass through the annular opening <b>204</b><i>a</i>. Space serving as a chamber <b>101</b><i>a </i>and space serving as a chamber <b>101</b><i>b </i>are only located outside the vibrating member <b>103</b>. Space <b>101</b><i>c </i>of the inside of the vibrating member <b>103</b>, and the chamber <b>101</b><i>a </i>and chamber <b>101</b><i>b </i>are isolated. Accordingly, the gas within the housing <b>201</b> outside the vibrating member <b>103</b> can be jetted outside the housing <b>201</b> smoothly effectively via nozzles <b>102</b><i>a </i>and <b>102</b><i>b. </i>

0271Also, noise can also be reduced as a result of an air flow becoming smooth. Actually, for example, with a configuration such as shown in <figref idref="DRAWINGS">FIG. 47</figref>, there is difference between a noise level output from a nozzle at the side where the actuator <b>5</b> is provided and a noise level output from a nozzle at the side where the actuator <b>5</b> is not provided. With a trial manufacture by the present inventors, noise at the side where the actuator is not provided has been smaller than noise at the side where the actuator is provided by 10 dB or so at the peak of noise spectrum. With the jet flow generating device <b>200</b>, the actuator <b>5</b> is not provided in the chambers <b>101</b><i>a </i>and <b>101</b><i>b </i>which communicate the nozzles <b>102</b><i>a </i>and <b>102</b><i>b </i>respectively, and accordingly, noise is suppressed.

0272<figref idref="DRAWINGS">FIG. 53</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment. This jet flow generating device <b>210</b> includes the vibrating member <b>3</b> having the side plate <b>3</b><i>b</i>, and a vibrating plate <b>113</b>. A partition plate <b>214</b> fixed to a housing <b>211</b> is provided with an annular opening <b>214</b><i>a</i>. The opening <b>214</b><i>a </i>is not necessarily annular, and may be divided into multiple openings. The actuator <b>5</b> is installed on the partition plate <b>214</b>, as with the device shown in <figref idref="DRAWINGS">FIG. 52</figref>. Chambers <b>121</b><i>a</i>, <b>121</b><i>b</i>, and <b>121</b><i>c </i>are mutually isolated. With this jet flow generating device <b>210</b>, the vibrating plate <b>113</b> is vibrated in sync with the vibrating member <b>3</b> due to change in the air pressure within the chamber <b>121</b><i>c </i>by the vibrating member <b>3</b> being vibrated. Thus, with the chambers <b>121</b><i>a </i>and <b>121</b><i>b</i>, pressure is alternately increased and decreased, and air is alternately jetted via the nozzles <b>122</b><i>a </i>and <b>122</b><i>b</i>. According to the present embodiment as well, the same advantages as the jet flow generating device <b>200</b> shown in <figref idref="DRAWINGS">FIG. 52</figref> can be obtained.

0273<figref idref="DRAWINGS">FIG. 54</figref> is a cross-sectional view illustrating part of an electronic device according to one embodiment. An electronic device <b>250</b> is, for example, a PC. In this example, part of the housing of a jet flow generating device <b>220</b> is integrated with the housing <b>251</b> of the electronic device <b>250</b>. Specifically, the housing making up a chamber <b>221</b><i>b </i>at the lower portion side of the jet flow generating device <b>220</b> is integrated with the housing <b>251</b>. According to such a configuration, as compared with a case wherein the jet flow generating device <b>180</b> shown in <figref idref="DRAWINGS">FIG. 47</figref> is implemented in a similar electronic device, the electronic device <b>250</b> can be reduced in thickness equivalent to the worth of thickness of the housing <b>181</b> of the jet flow generating device <b>180</b>. The jet flow generating device <b>220</b> jets air toward a heat sink <b>84</b>, and heat is discharged from air communication openings <b>251</b><i>a </i>which are opened in the housing <b>251</b>.

0274Note that in the event that the above-mentioned jet flow generating devices and vibrating devices are each implemented in an electronic device, such as shown in <figref idref="DRAWINGS">FIG. 54</figref>, the housing of the electronic device and the housing of the jet flow generating device are not necessarily integrated.

0275<figref idref="DRAWINGS">FIG. 55</figref> is a partial-cutaway perspective view of the jet flow generating device <b>10</b> shown in <figref idref="DRAWINGS">FIG. 1</figref> implemented in a laptop PC, for example. Thus, a heat sink <b>84</b>, and a jet flow generating device <b>230</b> configured to jet air toward the heat sink <b>84</b>, are implemented in a PC <b>300</b>.

0276<figref idref="DRAWINGS">FIG. 56</figref> is a perspective view illustrating a heat sink, upon which air from the jet flow generating device <b>10</b> or the like is blown. This heat sink <b>97</b> is provided with multiple air communication holes <b>96</b>. The heat sink <b>97</b> is cooled by unshown air from the jet flow generating device passing through the communication holes <b>96</b>. <figref idref="DRAWINGS">FIG. 57</figref> illustrates a combination of a jet flow generating device <b>10</b> and the heat sink <b>97</b>, for example.

0277<figref idref="DRAWINGS">FIG. 58</figref> is a perspective view illustrating another embodiment of a combination of jet flow generating devices and a heat sink. With this example, the two jet flow generating devices <b>10</b> shown in <figref idref="DRAWINGS">FIG. 57</figref> are combined, which blow air toward the heat sink <b>97</b>. The size, etc., of the heat sink <b>97</b>, are determined in accordance with the heat amount to be radiated, but the size of the jet flow generating device can be also determined thus arbitrarily in accordance with the size of the heat sink <b>97</b>. Though the size of the jet flow generating device itself can be increased, as shown in <figref idref="DRAWINGS">FIG. 58</figref>, even with the jet flow generating device of which the size (width) differs from the size of the heat sink <b>97</b>, such a heat sink <b>97</b> can be handled by arraying the two jet flow generating devices horizontally in parallel as shown in <figref idref="DRAWINGS">FIG. 58</figref>. The movement of the two vibrating plates is turned into an opposite phase from the state shown in <figref idref="DRAWINGS">FIG. 58</figref> by further adding the jet flow generating device, whereby mechanical vibration can be attenuated.

0278<figref idref="DRAWINGS">FIG. 59</figref> is a perspective view illustrating another embodiment of a heat sink and a jet flow generating device. The housing of this jet flow generating device <b>320</b> is a rectangle. Thus, the shape of the jet flow generating device <b>320</b> is not necessarily restricted to a round shape, which differs from an axial flow fan, and rather an arbitrarily shape can be employed to some extent. This contributes to the effective use of space of the device.

0279<figref idref="DRAWINGS">FIG. 60</figref> is a diagram illustrating an air flow when a jet flow generating device <b>180</b> is implemented in a housing <b>351</b> of the electronic device. The housing <b>351</b> is provided air inlets <b>351</b><i>a </i>at each of the upper portion <b>351</b><i>c </i>and bottom <b>351</b><i>d </i>thereof. The rear face side of the heat sink <b>97</b> is provided with multiple air outlets <b>351</b><i>b</i>. The air inlets <b>351</b><i>a </i>are disposed around nozzle openings <b>182</b> of the jet flow generating device <b>280</b>. Thus, a synthesis jet flow is readily generated when the jet flow generating device <b>180</b> operates, whereby the amount of air to be blown as to the heat sink <b>97</b> can be increased. The bottom <b>351</b><i>d </i>is provided with a spacer <b>354</b> configured to readily introduce open air from the air inlets <b>351</b><i>a </i>by providing a gap between the bottom <b>351</b><i>d </i>and the ground <b>233</b>. The spacer <b>354</b> is molded integrally with the same material as the housing <b>351</b>.

0280In the event that the electronic device is the laptop PC, an operator is frequently situated near the front of the PC. Accordingly, in this case, it is not desirable for a hot wind to blow in the forward direction. Therefore, it is desirable for the air outlets <b>351</b><i>b </i>to be provided on the rear face or side face. When the jet flow generating device operates, air flows in from the air inlets <b>351</b><i>a </i>to generate the above-mentioned synthesis jet flow, the synthesis jet flow formed by the jet flow generating device <b>180</b> passes through the heat sink <b>97</b>, and is discharged from the air outlets <b>351</b><i>b</i>. As shown in <figref idref="DRAWINGS">FIG. 61</figref>, the air inlets <b>351</b><i>a </i>of the housing <b>351</b> of the electronic device may be provided only at the bottom <b>351</b><i>d </i>side.

0281<figref idref="DRAWINGS">FIG. 62</figref> illustrates an embodiment wherein the tandem-type jet flow generating devices and the heat sink <b>97</b>, shown in <figref idref="DRAWINGS">FIG. 58</figref> are implemented in a PC <b>400</b>. <figref idref="DRAWINGS">FIG. 63</figref> illustrates an embodiment wherein a jet flow generating device <b>320</b> is implemented in a display device <b>450</b> as an electronic device. In this case, air outlets are provided in the upward direction. In the event of being implemented in the display device, ventilation backward, upward, or toward the side face is preferable. <figref idref="DRAWINGS">FIG. 64</figref> illustrates an embodiment wherein a jet flow generating device <b>330</b> is implemented in a projector <b>500</b> as an electronic device.

0282<figref idref="DRAWINGS">FIG. 65</figref> is a cross-sectional view illustrating a jet flow generating device according to another embodiment. <figref idref="DRAWINGS">FIG. 66</figref> is a cross-sectional view along line C-C in <figref idref="DRAWINGS">FIG. 65</figref>.

0283With a jet flow generating device <b>340</b>, a nozzle member <b>322</b> and a housing <b>321</b> are made up of different parts. For example, the housing <b>321</b> and the nozzle member <b>322</b> are manufactured separately, and the nozzle member <b>322</b> is implemented in the housing <b>321</b>, whereby the jet flow generating device <b>340</b> can be readily assembled. Also, each of the housing <b>321</b> and the nozzle member <b>322</b> can be manufactured with an integral molding. The nozzle member <b>322</b> includes multiple nozzles <b>322</b><i>a </i>and multiple nozzles <b>322</b><i>b</i>. That is to say, the nozzle member <b>322</b> includes multiple gas conduits therein. The front of the housing <b>321</b>, i.e., an opening is formed at the side where the nozzle member <b>322</b> is disposed, of the housing <b>321</b>, a chamber <b>321</b><i>a </i>communicates with a region <b>326</b><i>a </i>of the inside of the nozzle member <b>322</b>, and a chamber <b>321</b><i>b </i>communicates with a region <b>326</b><i>b</i>. The nozzle member <b>322</b> is made up of a resin, but may be metal.

0284As shown in <figref idref="DRAWINGS">FIG. 66</figref>, at the front face side (the left side in the drawing) the chamber <b>321</b><i>a </i>and the chamber <b>321</b><i>b </i>are divided by a partition member <b>324</b> where an elastic supporting member <b>6</b> is implemented. A feeder wire <b>16</b> is connected to a circuit board <b>323</b> attached at the rear face side of the housing <b>321</b>. The circuit board <b>323</b>, on which ICs configured to generate a driving signal arranged to vibrate a vibrating member (vibrating plate) <b>303</b>, and so forth are mounted, supplies the generated signal to an actuator <b>5</b>. Thus, the circuit board <b>323</b> is implemented in the jet flow generating device <b>340</b>, whereby intermediate electrical connection means such as the above-mentioned terminal block can be eliminated, and also the configuration can be simplified.

0285Also, the circuit board <b>323</b> is attached to the side face <b>321</b><i>c </i>of which the angle differs from the face generally perpendicular to the vibrating direction of the vibrating plate <b>303</b>, e.g., the side face <b>321</b><i>c </i>of the housing <b>321</b>, whereby the thickness of the jet flow generating device <b>340</b> can be reduced. In the event of this embodiment, the side face <b>321</b><i>c </i>differs generally 90 degrees as compared with the face generally perpendicular to the vibrating direction of the vibrating plate <b>303</b>. Thus, from the meaning of making the thickness of the jet flow generating device <b>340</b> thin, as shown in <figref idref="DRAWINGS">FIG. 67</figref>, an arrangement can be conceived wherein a slope <b>327</b><i>d </i>(or <b>327</b><i>e</i>) is formed on the outer surface of a housing <b>327</b>, and the circuit board <b>323</b> is attached to the slope <b>327</b><i>d </i>(or <b>327</b><i>e</i>) thereof.

0286Further, the circuit board <b>323</b> is disposed at the opposite side of the side where the nozzle member <b>322</b> is implemented, whereby, with the manufacturing process of the jet flow generating device <b>340</b> for example, the wiring of the feeder line <b>16</b> and so forth can be readily performed.

0287Note that instead of all of the terminal blocks <b>21</b> described with reference to <figref idref="DRAWINGS">FIG. 38</figref>, <figref idref="DRAWINGS">FIG. 39</figref>, <figref idref="DRAWINGS">FIG. 42</figref>, and the like, or the drawings subsequent thereto, the circuit board <b>323</b> may be attached thereto.

0288<figref idref="DRAWINGS">FIG. 68</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment. A circuit board <b>323</b> of a jet flow generating device <b>360</b> according to this embodiment makes up part of a housing <b>341</b>. That is to say, the housing <b>341</b> is provided with an opening, and the circuit board <b>323</b> is inserted in the opening thereof so as to close the opening thereof. According to such an embodiment, the horizontal width of the jet flow generating device <b>360</b> in <figref idref="DRAWINGS">FIG. 68</figref> can be reduced, thereby contributing to reduction in size.

0289<figref idref="DRAWINGS">FIG. 69</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment. <figref idref="DRAWINGS">FIG. 70</figref> is a cross-sectional view along line D-D in <figref idref="DRAWINGS">FIG. 69</figref>.

0290This jet flow generating device <b>350</b> is provided with a flat-plate-shaped frame <b>328</b> configured to support a vibrating member (vibrating plate) <b>333</b> and an elastic supporting member <b>329</b>. Specifically, as shown in <figref idref="DRAWINGS">FIG. 71</figref>, the frame <b>328</b> includes a hole <b>328</b><i>a</i>, and has a flat-plate-shaped outward form. An elastic supporting member <b>329</b> is implemented with a vibrating plate <b>333</b>. The elastic supporting member <b>329</b> is attached to the frame <b>328</b> at an attachment portion (peripheral portion) <b>329</b><i>a </i>provided at the outer circumference thereof. Thus, the frame <b>328</b> has a flat-plate shape, whereby assembling can be readily performed, i.e., manufacturing can be readily performed.

0291The frame <b>328</b> and the elastic supporting member <b>329</b> may be fabricated with integral molding. That is to say, for example, in a state in which the frame <b>328</b> prepared beforehand is disposed in a model for molding of the elastic supporting member <b>329</b>, the elastic supporting member <b>329</b> made up of rubber or resin or the like is molded. As for an integral molding method, for example, a compression method, transfer method, injection method, or another known method is employed. According to integral molding, not only the manufacturing process is reduced, but also the position accuracy between the elastic supporting member <b>334</b> and the frame <b>335</b>, i.e., the position accuracy between the elastic supporting member <b>334</b> and the housing is markedly improved.

0292The elastic supporting member <b>334</b> and the vibrating plate <b>333</b> may be integrally molded. In this case, as with the case of the frame <b>328</b>, in a state in which the vibrating plate <b>333</b> prepared beforehand is disposed in a model for molding of the elastic supporting member <b>329</b>, the elastic supporting member <b>329</b> is molded.

0293For example, in the event that the housing <b>331</b> is a resin or the like, the frame <b>328</b> is a member of which the rigidity is higher than the resin thereof. Examples of the material thereof include aluminum, stainless still, copper, iron, SPCC (Cold-rolling steel plate), and so forth. The material of the frame <b>328</b> is not restricted to metal, and rather may be any material as long as it is high in rigidity. Alternatively, in the event that the housing <b>331</b> is metal, the material of the frame <b>328</b> may be the type of metal as the material of the housing <b>331</b>, or may be a different type of metal.

0294For example, as shown in <figref idref="DRAWINGS">FIG. 65</figref>, in the event that the housing <b>321</b> including the partition member <b>324</b> is an integral molded article, upon the partition member <b>324</b> being formed too thin, it becomes difficult to maintain the flatness thereof. In the event that the thickness of the partition member <b>324</b> is set to 1 mm or so, the implemented face of the elastic supporting member <b>6</b> as to the partition member <b>324</b> is not a flat face, the movement of the vibrating plate does not become linear movement, and there is a possibility that excessive movement may be included. Also, thus, there is a possibility that noise may increase. However, in the event that the frame <b>328</b> shown in <figref idref="DRAWINGS">FIG. 70</figref> and the like is made up of a material of which the rigidity is high, even if the thickness thereof is 0.5 through 1 mm or so, sufficient rigidity can be maintained. Thus, reduction in thickness regarding the jet flow generating device <b>350</b> can be realized.

0295Note that the shape viewed at the plane of the frame <b>328</b> (the shape within the plane generally perpendicular to the vibrating direction of the vibrating plate <b>333</b>) is not restricted to the shape shown in <figref idref="DRAWINGS">FIG. 71</figref>, and rather various types of shape can be conceived.

0296<figref idref="DRAWINGS">FIG. 72</figref> is a cross-sectional view illustrating another example of an arrangement wherein a frame and an elastic supporting member are integrally molded, and illustrates part of a frame and part of an elastic supporting member. In <figref idref="DRAWINGS">FIG. 70</figref>, <figref idref="DRAWINGS">FIG. 71</figref>, and so forth, an arrangement has been made wherein the frame <b>328</b> is jointed to the attachment portion <b>329</b><i>a </i>of the elastic supporting member <b>329</b>, and the frame <b>328</b> is exposed. In <figref idref="DRAWINGS">FIG. 72</figref>, a covering portion <b>334</b><i>a </i>provided on an outer circumferential portion <b>334</b><i>b </i>of an elastic supporting member <b>334</b> covers a frame <b>335</b>. Even with the embodiment shown in <figref idref="DRAWINGS">FIG. 72</figref>, the elastic supporting member <b>334</b> and the frame <b>335</b> are fabricated with integral molding. The overall shape of the frame <b>335</b> and the elastic supporting member <b>334</b> may be the shape shown in <figref idref="DRAWINGS">FIG. 71</figref>, but is not restricted to that shape, and rather may be any shape such as a circle, an ellipse, a polygon, or the like as long as within the plane generally perpendicular to the vibrating direction of the vibrating plate.

0297Following being thus integrally molded, the covering portion <b>334</b><i>a </i>or outer circumferential portion <b>334</b><i>b </i>is jointed to the housing of an unshown jet flow generating device, whereby the elastic supporting member <b>334</b> is implemented in the housing thereof. With the present embodiment, according to integral molding, not only the manufacturing process is reduced, but also the position accuracy between the elastic supporting member <b>334</b> and the frame <b>335</b>, i.e., the position accuracy between the elastic supporting member <b>334</b> and the housing is markedly improved.

0298In <figref idref="DRAWINGS">FIG. 73</figref>, an elastic supporting member <b>336</b> covers a frame <b>335</b> with the frame covering portion <b>336</b><i>a </i>thereof, and also a vibrating plate <b>338</b> is covered with a vibrating plate covering portion <b>338</b><i>a</i>. Such an elastic supporting member <b>336</b> is also formed with integral molding. Specifically, in a state in which the frame <b>335</b> and the vibrating plate <b>338</b> are disposed in a model for molding of the elastic supporting member <b>336</b>, the elastic supporting member <b>336</b> is molded. In the event that the vibrating plate <b>338</b> is metal, this contributes to reduction in thickness. Of course, the vibrating plate <b>338</b> is not restricted to metal, and rather may be a resin, a rubber, or the like. Thus, the attachment process of the elastic supporting member <b>336</b>, frame <b>335</b>, and vibrating plate <b>338</b> will be omitted, and also, the position accuracy of each of the elastic supporting member <b>336</b>, frame <b>335</b>, and vibrating plate <b>338</b> is markedly improved.

0299<figref idref="DRAWINGS">FIG. 74</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment.

0300A jet flow generating device <b>370</b> is illustrated upside down as compared with the jet flow generating devices described so far. The reason why the jet flow generating device <b>370</b> is illustrated upside down is, for example, to indicate that in the event that the jet flow generating device <b>370</b> is built in the housing of an unshown electronic device such as a PC or the like, there is a case wherein the jet flow generating device <b>370</b> is disposed such that a chamber <b>341</b><i>b </i>which is the side where an actuator <b>5</b> is disposed becomes downward, and a chamber <b>341</b><i>a </i>becomes upward. However, in the event that the electronic device is built in the jet flow generating device <b>370</b>, the jet flow generating device <b>370</b> is not necessarily thus disposed upside down.

0301A top plate of a housing <b>341</b> of the jet flow generating device <b>370</b> may be made up of metal, for example. Thus, the strength thereof increases as compared with a resin and so forth, and the metal plate <b>343</b> can be reduced in thickness for the worth equivalent to the increase of the strength, whereby reduction in thickness regarding the jet flow generating device <b>370</b> can be realized. For example, in this case, even if the metal plate <b>343</b> is thickness of 0.5 mm or so, sufficient rigidity can be obtained. In the event of a resin, the resin of which the thickness is 0.5 mm or so is readily curved, and folded, and accordingly, the shape thereof cannot be maintained.

0302Further, in the event that the metal plate <b>343</b> is a magnetic member, the magnetic field of a magnetic circuit made up of a magnet <b>14</b> of an actuator <b>5</b>, and yokes <b>8</b> and <b>18</b> can be prevented from being leaked upward from the metal plate <b>343</b>. Examples of a magnetic material include iron, a perm alloy, a silicon steel board, and SPCC (cold-rolling steel plate). <figref idref="DRAWINGS">FIG. 75A</figref> is a diagram illustrating a simulation of a magnetic field formed by the magnet <b>14</b>, and the yokes <b>8</b> and <b>18</b> in the event that there is no metal plate <b>343</b>, and <figref idref="DRAWINGS">FIG. 75B</figref> is a diagram illustrating a simulation of a magnetic field formed by the magnet <b>14</b>, and the yokes <b>8</b> and <b>18</b> in the event that there is the metal plate <b>343</b>. As can be understood from these drawings, the magnetic filed can be prevented from being leaked upward from the metal plate <b>343</b>. Note that with this simulation, the material of the metal plate <b>343</b> is iron.

0303For example, in the event that this jet flow generating device <b>370</b> is built in the housing of an unshown electronic device such as a PC or the like, there is a case conceived wherein unshown various types of electronic parts are disposed on the metal plate <b>343</b>. In this case, according to the magnetic shield effect of the metal plate <b>343</b>, concern regarding the bad influence to the electronic parts decreases.

0304Also, there is provided the metal plate <b>343</b>, whereby this metal plate <b>343</b> can be employed as a heat insulating board configured to release heat filled within the housing <b>341</b>.

0305Note that in <figref idref="DRAWINGS">FIG. 74</figref>, an arrangement has been made wherein the metal plate <b>343</b> is provided only at the chamber <b>341</b><i>a </i>side, but an arrangement may be made wherein the metal plate <b>343</b> is further provided at the chamber <b>341</b><i>b </i>side. In this case, in order to prevent the magnetism of the yoke <b>8</b> from being leaked outside the housing <b>341</b>, an arrangement needs to be made wherein the yoke <b>8</b> is not exposed outside the housing <b>341</b>, and is accommodated within the housing <b>341</b>. Alternatively, in the event that there is the need to reduce the thickness of the jet flow generating device without exhibiting such magnetic field effect, as shown in <figref idref="DRAWINGS">FIG. 74</figref>, it is desirable to configure part of the housing so as to expose the yoke <b>8</b>, and to configure the metal plate provided at the chamber <b>341</b><i>b </i>side with a nonmagnetic substance. This is because the magnetic flux from the yoke <b>8</b> is prevented from being flowed in the metal plate thereof.

0306<figref idref="DRAWINGS">FIG. 76</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment.

0307With a jet flow generating device <b>380</b>, the housing <b>381</b> thereof is provided with an opening <b>381</b><i>a </i>for work, a lid <b>382</b> is mounted on the housing <b>381</b> so as to close the opening <b>381</b><i>a </i>thereof. According to such a configuration, with the manufacturing process (or including inspection process) of the jet flow generating device <b>380</b>, a worker can readily work via the opening <b>381</b><i>a</i>. Specifically, in the event that there is no opening <b>381</b><i>a</i>, before the nozzle member <b>322</b> is attached to the housing <b>381</b>, the worker needs to perform wiring or the like of the feeder line <b>16</b> using tweezers or the like from the opening <b>381</b><i>b </i>of the housing <b>381</b> of the portion where the nozzle member <b>322</b> thereof is attached, which is a hard task. However, due to the fact that there is the opening <b>381</b><i>a</i>, in the event that the opening <b>381</b><i>a </i>is disposed near the feeder line <b>16</b>, wiring work becomes easy. Following the wiring work being completed, the opening <b>381</b><i>a </i>is closed with the lid <b>382</b>. The lid <b>382</b> can be fixed to the housing <b>381</b> later by adhesive agent, fusing, or another method. The lid <b>382</b>, as with the meaning described with reference to <figref idref="DRAWINGS">FIG. 50</figref>, may be glass or resin such as transmitting visible light. Thus, the worker can observe the situation within the housing <b>381</b>, or the like.

0308<figref idref="DRAWINGS">FIG. 77</figref> is a cross-sectional view illustrating another embodiment of the coil <b>17</b> wound on the coil bobbin <b>9</b> shown in <figref idref="DRAWINGS">FIG. 4</figref> and so forth, for example. With this embodiment, a coil <b>57</b> wound on the coil bobbin <b>9</b> is made up of conductor wires <b>57</b><i>a </i>each of which the cross section is a rectangle. This “cross section” means a cross section generally perpendicular to the longitudinal direction of the conductor wires <b>57</b><i>a </i>thereof. The coil <b>57</b> is wound by three layers, but this is but an example, and may be any number of layers. According to such a configuration, compared with a coil <b>58</b> shown in <figref idref="DRAWINGS">FIG. 78</figref> made up of conductor wires each of which the cross section is a circle, the density of the coil <b>57</b> per unit of the cross section thereof can be increased. That is to say, many conductor wires can be wound with the same volume. Also, even with the density by which a conductor occupies is the same, and with the same number of windings, the winding height (thickness of overall coil) thereof decreases, whereby reduction in thickness regarding the coil <b>57</b> can be realized. In <figref idref="DRAWINGS">FIG. 77</figref>, the cross sections of the conductor wires <b>57</b><i>a </i>are squares, but may be triangles, or may be pentagons.

0309<figref idref="DRAWINGS">FIG. 79</figref> is a cross-sectional view illustrating another embodiment of a coil wound on an unshown coil bobbin. A coil <b>59</b> shown in <figref idref="DRAWINGS">FIG. 79</figref> is configured such that conductor wires <b>59</b><i>a </i>are wound by even layers, e.g., four layers. The conductor wires <b>59</b><i>a </i>being wound by even layers, as shown in an arrow, is effective in a case wherein the winding start and the winding end of the conductor wires <b>59</b><i>a </i>are set to the same side (upper side in <figref idref="DRAWINGS">FIG. 79</figref>). That is to say, in this case, as shown in <figref idref="DRAWINGS">FIG. 80</figref>, in the event of a coil <b>60</b> of odd layers, the thickness equivalent to one wire worth (the thickness equivalent to one layer worth) of conductor wires <b>60</b><i>a </i>shown in the right side in <figref idref="DRAWINGS">FIG. 80</figref> becomes useless. However, in the event of even layers, the uselessness of that space is eliminated, thereby contributing to reduction in size.

0310Note that in <figref idref="DRAWINGS">FIG. 79</figref> the coil <b>59</b> is made up of four layers, but may be two layers, or even layers equal to or greater than six layers. The cross sections of the conductor wires <b>59</b><i>a </i>are circles, but are not restricted to circles, may be rectangles such as shown in <figref idref="DRAWINGS">FIG. 77</figref>.

0311<figref idref="DRAWINGS">FIG. 81</figref> is a plane view illustrating a jet flow generating device according to yet another embodiment of the present invention. <figref idref="DRAWINGS">FIG. 82</figref> is a cross-sectional view along line D-D in <figref idref="DRAWINGS">FIG. 81</figref>.

0312A jet flow generating device <b>390</b> includes tandem-type jet flow generators <b>40</b> wherein two housings <b>61</b> and <b>62</b> are integrated. Hereafter, one housing including all of the housings <b>61</b> and <b>62</b> which are integrated is referred to as a “housing <b>70</b>”. The housing <b>70</b> can be integrally molded with a model or the like for example. The housing <b>70</b> includes chambers <b>391</b><i>a </i>and <b>391</b><i>b</i>, and an actuator <b>5</b>, a vibrating plate <b>303</b>, and so forth are provided for each of the chambers <b>391</b><i>a </i>and <b>391</b><i>b</i>. The chambers <b>391</b><i>a </i>and <b>391</b><i>b </i>are disposed so as to array within the plane perpendicular to a vibrating direction R of the vibrating plate <b>303</b> (horizontal direction in <figref idref="DRAWINGS">FIG. 82</figref>). A nozzle member <b>322</b> including multiple nozzles <b>322</b><i>a </i>are mounted in the front face of the housing <b>70</b>, the conduit within each nozzle <b>322</b><i>a </i>communicates with the chamber <b>391</b><i>a </i>or <b>391</b><i>b</i>. This nozzle member <b>322</b> has the same configuration as the nozzle member <b>322</b> shown in <figref idref="DRAWINGS">FIG. 65</figref>. The rear face <b>70</b><i>b </i>of the housing <b>70</b> is fixed with the circuit board <b>323</b>. This is not restricted to the circuit board <b>323</b>, and rather may be a terminal block. The circuit board <b>323</b> may be configured of part of the housing <b>341</b> such as shown in <figref idref="DRAWINGS">FIG. 68</figref>.

0313Thus, a vibrating plate <b>303</b> is provided for each of the chambers <b>391</b><i>a </i>and <b>391</b><i>b </i>which are arrayed in a plane, and air is jetted from the nozzle member <b>322</b>, whereby the jet flow generating device <b>390</b> can be reduced in size, and also the discharge amount of air can be increased. Also, the two vibrating plates <b>303</b> are vibrated such that at timing wherein one of the vibrating plates <b>303</b> moves in one direction, the other of vibrating plates <b>303</b> moves in the direction opposite thereof, whereby the moment of the overall of device is generated, but the vibrations of the two vibrating plates <b>303</b> thereof are cancelled. Thus, the vibration applied to the electronic device in which the jet flow generating device <b>390</b> is implemented can be suppressed.

0314<figref idref="DRAWINGS">FIG. 83</figref> is a plane view illustrating a state in which the tandem-type jet flow generating devices shown in <figref idref="DRAWINGS">FIG. 81</figref> are installed with a heat transport device configured to transport heat according to the phase change of a working fluid using a capillary action. <figref idref="DRAWINGS">FIG. 84</figref> is a rear view of the jet flow generating device thereof.

0315The heat transport device is made up of two heat pipes <b>141</b> and <b>241</b>, for example. As shown in <figref idref="DRAWINGS">FIG. 84</figref>, both side portions of a housing <b>270</b> configured of two housings <b>161</b> and <b>162</b> which are integrally provided, of the jet flow generating device <b>510</b>, are provided with steps <b>270</b><i>a </i>and <b>270</b><i>b</i>, respectively. Heat pipes <b>141</b> and <b>241</b> which are thermally connected to heat spreaders <b>129</b> and <b>229</b> are passed through these steps <b>270</b><i>a </i>and <b>270</b><i>b</i>, respectively. Thus, there is no problem structurally even if there are the steps <b>270</b><i>a </i>and <b>270</b><i>b </i>at both ends of the housing <b>202</b>. The portion which is restricted in the thickness direction (vertical direction in <figref idref="DRAWINGS">FIG. 84</figref>) is the portion where the actuator <b>5</b> is disposed, and there is no problem even if a step is provided as long as the step is provided on a portion other than that restricted portion. Note that a recessed portion or a groove may be provided instead of steps. Also, holes may be provided in the housing <b>270</b> such that the heat pipe <b>141</b> and so forth can pass through the holes.

0316The heat spreaders <b>129</b> and <b>229</b> are thermally connected with unshown heating sources. In this case, the heating source is a CPU, a graphic chip, or the like, but is not restricted to these. Let us say that “thermally connected” means directly connected, or connected via a thermally conductive member or thermally conductive sheet-shaped member, but does not include a case wherein heat-conducting is performed by fluid, such as gas, a fluid, or the like. The endothermic sides <b>141</b><i>a </i>and <b>241</b><i>a </i>of the heat pipes <b>141</b> and <b>241</b> are thermally connected to the heat spreaders <b>129</b> and <b>229</b> respectively, and the heat radiation sides <b>141</b><i>b </i>and <b>241</b><i>b </i>are thermally connected to each of the heat sinks <b>235</b>. Thus, the heat from the unshown two heating sources is propagated to the heat sinks <b>235</b>, and according to the synthesis jet flow generated from the jet flow generating device <b>510</b>, heat is emitted from the heat sinks <b>235</b>.

0317With the present embodiment, the steps <b>270</b><i>a </i>and <b>270</b><i>b </i>of the housing <b>270</b> are provided with the heat pipes <b>141</b> and <b>241</b> respectively, whereby the thickness of the jet flow generating device <b>510</b> including the heat pipes <b>141</b> and <b>241</b> can be reduced.

0318<figref idref="DRAWINGS">FIG. 85</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment.

0319The actuator <b>5</b> of a jet flow generating device <b>520</b> is provided so as to protrude from a housing <b>311</b>. Specifically, the yoke <b>8</b> which is a part of the actuator <b>5</b> protrudes from the under surface <b>311</b><i>a </i>of the housing <b>311</b>. That is to say, for example, in the event that the thickness of the actuator <b>5</b> (the thickness in the vertical direction in <figref idref="DRAWINGS">FIG. 85</figref>) is the same thickness as the actuator <b>5</b> described so far, the thickness of the housing <b>311</b> is configured thinly. With a nozzle member <b>222</b>, the thickness thereof is designed so as to match the thickness of the housing <b>311</b> thereof.

0320That is to say, according to such a configuration, the housing <b>311</b> is reduced as small as possible, whereby useless space can be eliminated. For example, the heat pipe <b>141</b> or the like is installed at the undersurface <b>311</b><i>a </i>of the housing <b>311</b>, which is around the yoke <b>8</b>. Also, as well as the heat pipe <b>141</b> or the like, for example, in the event that the jet flow generating device <b>520</b> is implemented in an electronic device, the parts of the electronic device and so forth can be disposed on the undersurface <b>311</b><i>a </i>or near the undersurface <b>311</b><i>a</i>. Thus, reduction in thickness regarding the electronic device can be realized.

0321<figref idref="DRAWINGS">FIG. 86</figref> is a plane view illustrating a jet flow generating device according to yet another embodiment.

0322A jet flow generating device <b>410</b> is, for example, tandem-type jet flow generating devices, the housing <b>401</b> thereof is provided with screw holes <b>401</b><i>a </i>for screw stops as fixing mechanisms. Also, the yokes <b>8</b> of the actuators <b>5</b> are also provided with screw holes <b>8</b><i>a</i>. For example, in the event that the jet flow generating device <b>410</b> is built in an electronic device, screw holes (not shown) are also formed in the housing of the electronic device, and screw stops can be performed by correlating the screw holes thereof with the screw holes <b>401</b><i>a </i>of the housing <b>401</b> of the jet flow generating device <b>410</b>. Thus, work when the jet flow generating device <b>410</b> is built in the electronic device can be readily performed.

0323As for the fixing mechanism, as well as a screw stop mechanism, for example, an engaging mechanism made up of an engaging protrusion and an engaged groove may be employed. In this case, the engaging protrusion (or engaged groove) may be provided in the housing <b>401</b>, or may be provided at the electronic device side. Also, as for the shapes of these engaging protrusion and engaged groove, various types of shape can be conceived, for example, such as a hook shape, or rail shape may be employed.

0324The screw holes <b>401</b><i>a </i>and <b>8</b><i>a </i>are not restricted to an embodiment wherein such tandem-type jet flow generating devices <b>410</b> are provided, and of course may be provided in the housings of all of the jet flow generating devices described above.

0325Also, the housing <b>401</b> includes a curved face <b>401</b><i>b </i>which connects the side face <b>401</b><i>c </i>and the rear face <b>401</b><i>d </i>thereof. That is to say, R is applied to the housing <b>401</b> from the side face <b>401</b><i>c </i>to the rear face <b>401</b><i>d</i>. The footprint of the housing <b>401</b> can be reduced by the worth equivalent to the amount of R. Thus, in the event that the jet flow generating device <b>410</b> is implemented in an electronic device, useless space can be eliminated, and many parts of the electronic device can be mounted, which are advantageous. Incidentally, the housing <b>1</b> of the jet flow generating device <b>10</b> shown in <figref idref="DRAWINGS">FIG. 1</figref> and so forth is also applied with R at the rear side.

0326<figref idref="DRAWINGS">FIG. 87</figref> is a plane view illustrating a jet flow generating device according to yet another embodiment, and part of the housing of an electronic device.

0327A jet flow generating device <b>420</b> includes a rectangular-parallelepiped housing <b>421</b>, for example. <figref idref="DRAWINGS">FIG. 88</figref> is a perspective view illustrating the housing <b>421</b> thereof. A first opening <b>423</b><i>a </i>and a second opening <b>423</b><i>b </i>are formed on a first side face <b>421</b><i>a </i>and a second side face <b>421</b><i>b </i>of the housing <b>421</b>, respectively. The housing <b>421</b> is formed in a rectangular-parallelepiped shape, so the opening faces of the openings <b>423</b><i>a </i>and <b>423</b><i>b </i>have a different angle, i.e., differ generally by 90 degrees. As shown in <figref idref="DRAWINGS">FIG. 87</figref>, a nozzle member <b>74</b> is mounted on the first side face <b>421</b><i>a </i>of the housing <b>421</b>. Also, a nozzle member <b>75</b> is mounted on the second side face <b>421</b><i>b</i>. The nozzle members <b>74</b> and <b>75</b> have generally the same configuration, and have generally the same configuration as the nozzle member <b>322</b> shown in <figref idref="DRAWINGS">FIG. 65</figref>. A circuit board <b>67</b> configured to drive the actuator <b>5</b> is installed on another side face <b>421</b><i>c </i>of the housing <b>421</b>.

0328The air discharged from the nozzle members <b>74</b> and <b>75</b> becomes a synthesis jet flow, and is supplied to each of the heat sinks <b>71</b> and <b>72</b> serving as a first heat-generating member and a second heat-generating member. The present embodiment is effective particularly in a case wherein the jet flow generating device <b>421</b>, and the heat sinks <b>71</b> and <b>72</b> are disposed around the corner of the housing <b>68</b> of an electronic device. Specifically, the heat sink <b>71</b> is disposed near a first air outlet <b>68</b><i>c </i>formed in the first side face <b>68</b><i>a </i>of the housing <b>68</b>, and the heat sink <b>72</b> is disposed near a second air outlet <b>68</b><i>d </i>formed in the second side face <b>68</b><i>b</i>. According to such a configuration, the air having heat flowed out from the heat sinks <b>71</b> and <b>72</b> is discharged from both the air outlets <b>68</b><i>c </i>and <b>69</b><i>d</i>, whereby heat can be radiated effectively.

0329Note that each of the first and second heat-generating members is not restricted to a heat sink, and rather may be anything such as a motor, an integrated circuit, or another electronic part as long as it generates heat.

0330<figref idref="DRAWINGS">FIG. 89</figref> illustrates a modification of the embodiment shown in <figref idref="DRAWINGS">FIG. 87</figref>. With this jet flow generating device <b>430</b>, a first side face <b>431</b><i>a </i>and a second side face <b>431</b><i>b </i>of the housing <b>431</b> thereof are mounted with nozzle members <b>77</b> and <b>78</b>, respectively. The housing <b>431</b>, as with the embodiment shown in <figref idref="DRAWINGS">FIG. 87</figref>, a first unshown opening face is provided in the first side face <b>431</b><i>a</i>, and a second opening face is provided in the second side face <b>431</b><i>b</i>. Thus, the first and second opening faces may be generally in parallel.

0331Note that the housing <b>421</b> of the jet flow generating device and so forth shown in <figref idref="DRAWINGS">FIG. 87</figref> and <figref idref="DRAWINGS">FIG. 89</figref> are rectangular-parallelepiped shapes, but they may be a pillar, an elliptic cylinder, a polygon pillar, or a combined shape of at least the two of these. In this case, nozzle members may be mounted on the multiple side faces of which the angles differ, of the housing.

0332<figref idref="DRAWINGS">FIG. 90</figref> is a plane view illustrating part of the inside of an electronic device in which multiple jet flow generating devices are built in.

0333With this example, jet flow generating devices <b>340</b><i>a </i>and <b>340</b><i>b </i>having the same configuration are disposed in a different direction within the housing <b>68</b> of an electronic device. The synthesis jet flow generated by the jet flow generating device <b>340</b><i>a </i>is supplied to a heat sink <b>71</b>, and the air having heat is discharged via the air outlet <b>68</b><i>e</i>. Also, the synthesis jet flow generated by the jet flow generating device <b>340</b><i>b </i>is supplied to a heat sink <b>72</b>, and the air having heat is discharged via the air outlet <b>68</b><i>d</i>. Thus, the multiple jet flow generating devices are disposed such that air is discharged in a different direction in accordance with the shape of the housing <b>68</b> of the electronic device, and the layout of unshown electronic parts and so forth within the housing <b>68</b>.

0334<figref idref="DRAWINGS">FIG. 91</figref> illustrates a modification of the embodiment shown in <figref idref="DRAWINGS">FIG. 90</figref>.

0335Jet flow generating devices <b>440</b><i>a </i>and <b>440</b><i>b </i>have the same configuration, and the plane shapes of the housings <b>441</b><i>a </i>and <b>441</b><i>b </i>thereof are rectangles. Heat sinks <b>71</b> and <b>72</b> are each disposed around air outlets <b>86</b><i>c </i>and <b>86</b><i>d </i>of the housing <b>86</b> of an electronic device. The heat sinks <b>71</b> and <b>72</b> have the same configuration. A length d<b>1</b> obtained by adding the length of the y direction of the heat sink <b>71</b>, to the length of the y direction of the jet flow generating device <b>440</b><i>a</i>, and a length d<b>2</b> obtained by adding the length of the Y direction of the heat sink <b>72</b>, to the length of the X direction of the jet flow generating device <b>440</b><i>b </i>are designed so as to become generally equal. Thus, the plane shape of the overall of both the heat sink <b>71</b> and the jet flow generating device <b>440</b><i>a </i>is generally a square, whereby useless space present at the corner of the housing <b>68</b> of the electronic device can be eliminated, as shown in <figref idref="DRAWINGS">FIG. 90</figref>.

0336<figref idref="DRAWINGS">FIG. 92</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment.

0337A jet flow generating device <b>530</b> includes a vibrating plate <b>80</b> having a magnet <b>91</b>. The vibrating plate <b>80</b> is supported by an elastic supporting member <b>6</b> as to a housing <b>451</b>, and a coil <b>81</b> is disposed at the bottom within the housing <b>451</b>. The vibrating plate <b>80</b> is configured by the plate-shaped magnet <b>91</b> being implemented in an annular member <b>92</b> made up of metal or resin, for example. In this case, the metal is preferably a nonmagnetic substance, but is not restricted to a nonmagnetic substance, and rather may be a magnetic substance. The magnet <b>91</b> is magnetized in an R direction which is a vibrating direction, for example. Also, the housing <b>451</b> is provided with nozzles <b>79</b><i>a </i>and <b>79</b><i>b </i>which discharge air. The coil <b>81</b> is configured, for example, by one conductor wire being wound, and as for the coil <b>81</b>, the plane coil <b>29</b> such as shown in <figref idref="DRAWINGS">FIG. 37</figref> is employed, for example.

0338The direction of the magnetic field generated by the coil <b>81</b> is changed by changing the direction of an electric current to flow into the coil <b>81</b>. The vibrating plate <b>80</b> is vibrated by repeating repulsion and suction as to the magnetic field of the magnet <b>91</b>, as the magnetic field generated by the coil <b>81</b> changes in direction. According to such a configuration, the portion moved due to the vibration is the vibrating plate <b>80</b> alone, i.e., the thickness of the actuator can be reduced, whereby reduction in thickness regarding the jet flow generating device <b>530</b> can be realized.

0339Though only the one coil <b>81</b> is provided in <figref idref="DRAWINGS">FIG. 92</figref>, the multiple coils <b>81</b> may be provided. Also, in this case, multiple magnets may be provided so as to correspond to the multiple coils <b>81</b>.

0340<figref idref="DRAWINGS">FIG. 93</figref> is a cross-sectional view illustrating a part of a jet flow generating device according to yet another embodiment.

0341A jet flow generating device <b>460</b> includes a vibrating plate <b>82</b> including a magnet <b>87</b>. With the vibrating plate <b>82</b>, for example, the magnet <b>87</b> is implemented around a plate <b>98</b> made up of metal or resin at the center. The magnet <b>87</b> is, for example, an annular shape, and is magnetized in the vibrating direction R.

0342As shown in <figref idref="DRAWINGS">FIG. 93</figref>, coils <b>88</b> are mounted on the outer circumference of the housing <b>461</b>. Specifically, for example, as shown in <figref idref="DRAWINGS">FIG. 94</figref>, the multiple coils <b>88</b> are mounted on the side face of the outer circumference of the housing <b>461</b>. The number of coils <b>88</b> can be set arbitrarily as appropriate. The coils <b>88</b> are not restricted to such an embodiment, and rather one coil may be configured by one conductor wire being wound around the outer circumference of the housing <b>461</b> with the vibrating direction R of the vibrating plate <b>82</b> as an axis. With the present embodiment, for example, an alternating current which flows into the coils <b>88</b> is rectified, whereby the vibrating plate <b>82</b> is vibrated by being absorbed cyclically in one direction of upward or downward directions, or repulsed.

0343Thus, the coils <b>88</b> are disposed outside the housing <b>461</b>, whereby the amplitude of the vibrating plate <b>82</b> can be increased without interference between the vibrating plate <b>82</b> and the coils <b>88</b>. Accordingly, the discharge amount of gas can be increased. Also, the portion which is moved due to vibration is not the coils but the magnet, which eliminates the necessity of a feeder line in the case of the coils moving, and also eliminates concern of line breakage after the jet flow generating device is used for years. Further, the resistance of an air flow generated within the housing <b>461</b> decreases, and also noise is suppressed.

0344<figref idref="DRAWINGS">FIG. 95</figref> is a cross-sectional view illustrating a jet flow generating device according to yet another embodiment.

0345A jet flow generating device <b>470</b> is configured such that a vibrating plate <b>94</b> including a piezoelectric member is disposed within a housing <b>471</b>. The vibrating plate <b>94</b> is namely a piezoelectric element. Examples of a piezoelectric element include a layered type configured by an electrode plate and a piezoelectric member being layered, a bimorph type, and a uni-morph type. The vibrating plate <b>94</b> is vibrated by AC voltage being applied to the piezoelectric element. Thus, reduction in thickness regarding the jet flow generating device <b>470</b> can be realized.

0346<figref idref="DRAWINGS">FIG. 96</figref> is a cross-sectional view illustrating a part of a jet flow generating device according to yet another embodiment.

0347A jet flow generating device <b>480</b> includes a vibrating plate <b>106</b> having a magnet <b>107</b>. Coils <b>110</b> are mounted at the outer circumference of a housing <b>481</b>. <figref idref="DRAWINGS">FIG. 97</figref> is a plane view illustrating the vibrating plate <b>106</b>. The vibrating plate <b>106</b> is configured by the annular magnet <b>107</b> being implemented at the outer circumference of a plate <b>112</b> made up of metal or resin or the like. The magnetizing direction of the magnet <b>107</b> is the circumferential direction. The shape of the vibrating plate <b>106</b> is, as described above, not restricted to a circle.

0348A screw mechanism <b>109</b> is provided between the outer circumference of the vibrating plate <b>106</b> and the inner wall <b>481</b><i>a </i>of the housing <b>481</b>. The screw mechanism <b>109</b> is configured, for example, by a screw thread (or a thread groove) being formed at the outer circumference of the magnet <b>107</b>, and a thread groove (or a screw thread) being formed at the inner wall <b>481</b><i>a </i>of the housing <b>481</b>.

0349Note that an arrangement may be conceived wherein the screw mechanism is formed neither at the magnet <b>107</b> nor at the inner wall <b>481</b><i>a</i>, and is configured of a ring-shaped member where a screw thread is formed, and a ring-shaped member where a thread groove is formed, and these members are fixed with the outer circumference of the magnet <b>107</b> and the inner wall <b>481</b><i>a. </i>

0350An AC electric current is applied to the coils <b>110</b>, whereby torque is applied to the magnet <b>107</b> so as to rotate within the plane thereof due to electromagnetic induction. Upon torque being applied to the magnet <b>107</b>, the screw mechanism <b>109</b> transforms the torque thereof into force in the vertical direction, and thus, the vibrating plate <b>106</b> is vibrated in the vibrating direction R. Even with such a configuration, reduction in thickness regarding the jet flow generating device <b>480</b> can be realized.

0351<figref idref="DRAWINGS">FIG. 98</figref> is a cross-sectional view illustrating a part of a jet flow generating device according to yet another embodiment.

0352A jet flow generating device <b>490</b> according to the present embodiment is provided with a cam mechanism <b>118</b> instead of the screw mechanism <b>109</b> shown in <figref idref="DRAWINGS">FIG. 96</figref>. <figref idref="DRAWINGS">FIG. 99</figref> is a diagram illustrating part of the inner wall of the housing <b>491</b> of the jet flow generating device <b>490</b>, and <figref idref="DRAWINGS">FIG. 100</figref> is a plane view illustrating the vibrating plate <b>106</b>. A cam groove <b>116</b> is formed on generally the overall of circumference of the inner wall <b>491</b><i>a </i>of the housing <b>491</b>. The cam groove <b>116</b> is, for example, formed in a wave shape. The outer circumference of the vibrating plate <b>106</b> is provided with multiple protrusions <b>117</b> which are engaged with the cam groove <b>116</b>. The number, shape, and size regarding the protrusions <b>117</b> are not restricted to the two shown in <figref idref="DRAWINGS">FIG. 100</figref>, and rather any number, shape, and size may be employed so as to vibrate the vibrating plate <b>106</b> smoothly.

0353According to the cam mechanism <b>118</b>, the rotation movement of the magnet <b>107</b> is transformed into vibration movement in the R direction of the vibrating plate <b>106</b>. Even with such a configuration, reduction in thickness regarding the jet flow generating device <b>490</b> can be realized.

0354<figref idref="DRAWINGS">FIG. 101</figref> is a perspective view illustrating a vibrating device according to yet another embodiment.

0355With this vibrating device <b>120</b>, actuators <b>142</b> are disposed around a vibrating plate <b>119</b>. The plane shape of the vibrating plate <b>119</b> is, for example, a rectangle, and the three actuators <b>142</b> are provided for example, which are provided at the three sides of the four sides of the vibrating plate <b>119</b>. <figref idref="DRAWINGS">FIG. 102</figref> is a cross-sectional view illustrating the configuration of the actuator <b>142</b>. The actuator <b>142</b> includes a long picture-like outer yoke <b>146</b> having a groove, a long picture-like and plate-shaped inner yoke <b>149</b> disposed within the groove of the outer yoke <b>146</b>, and a coil <b>148</b> mounted at the circumference of the magnet <b>147</b> and the vibrating plate <b>119</b> disposed between the outer yoke <b>146</b> and the inner yoke <b>149</b>. The magnet <b>147</b> is disposed on the outside wall <b>146</b><i>a </i>of the outer yoke <b>146</b>, and the coil <b>148</b> is disposed at the inside wall <b>146</b><i>b </i>side facing the outside wall <b>146</b><i>a </i>thereof. The magnet <b>147</b> is magnetized in the direction from the center to the outer circumferential side of the vibrating plate <b>119</b> along the face generally perpendicular to the vibrating direction R of the vibrating plate <b>119</b>.

0356Note that with the present embodiment, the three actuators <b>142</b> are provided, but the outside wall <b>146</b><i>a </i>of the outer yoke <b>146</b>, and the inner yoke <b>147</b> may be configured so as to be consecutively provided over all the circumferences of the vibrating plate <b>119</b> without a break. The number of the actuators <b>142</b> is not restricted to three, and may be two or four or more. The number of the sides of the vibrating plate is also changed depending on the plane shape of the vibrating plate, whereby the number of the actuators <b>142</b> can be changed depending on the number of the sides thereof as appropriate.

0357With such a configuration, the magnetic field is generated from the inner yoke <b>149</b> to the outer yoke <b>146</b>. AC electric current is applied to the coil <b>148</b>, whereby the vibrating plate <b>119</b> is vibrated in the R direction. With the present embodiment, the actuators <b>146</b> are disposed around the vibrating plate <b>119</b>, whereby reduction in thickness regarding the vibrating device <b>120</b> can be realized.

0358<figref idref="DRAWINGS">FIG. 103</figref> is a cross-sectional view illustrating a part of a jet flow generating device according to yet another embodiment. This <figref idref="DRAWINGS">FIG. 103</figref> illustrates only the right side from a center line f.

0359The housing <b>501</b> of the jet flow generating device <b>540</b> is made up of a magnetic substance. A magnet <b>14</b> is installed at the bottom within the housing <b>501</b>, and a plate-shaped yoke <b>18</b> is fixed with the magnet <b>14</b>. A wall <b>138</b> made up of a magnetic substance is erected on the top of the housing <b>501</b>, and this wall <b>138</b> is part of a yoke. A coil disposed so as to across the magnetic field formed from the plate-shaped yoke <b>18</b> to the wall <b>138</b> is wound around a barrel-shaped coil bobbin <b>216</b>. A vibrating plate <b>136</b> is implemented in the coil bobbin <b>216</b>, and the vibrating plate is supported by the elastic supporting member <b>6</b>. Thus, a yoke is configured by the plate-shaped yoke <b>18</b>, wall <b>138</b>, and housing <b>501</b>, whereby reduction in thickness regarding an actuator and the jet flow generating device <b>540</b> can be realized.

0360The present invention is not restricted to the above-mentioned embodiments, and various modifications can be applied thereto.

0361For example, the jet flow generating devices shown in each of the above-mentioned drawings, or the jet flow generating device in which each of the vibrating devices shown in each of the above-mentioned drawings is implemented, can be employed as means configured to supply the fuel of a fuel cell. Specifically, it is necessary to dispose the oxygen (air) suction inlet of a fuel cell itself, and the nozzles of the jet flow generating device so as to face both. According to such a configuration, a jet flow air discharged from the jet flow generating device is inhaled from the suction inlet as an oxygen fuel.

0362Also, of the vibrating devices shown in the above-mentioned embodiments, the feature portions of at least two vibrating devices can be combined as appropriate. This can be applied to jet flow generating devices.